diff --git a/ChangeLog b/ChangeLog
index 20eede70..7d658d70 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -2,7 +2,7 @@
 - redone im_Lab2XYZ(), im_XYZ2Lab(), im_Lab2LCh(), im_LCh2Lab(), im_UCS2LCh, 
   im_LCh2UCS(), im_XYZ2Yxy(), im_Yxy2XYZ(), im_float2rad(), im_rad2float(),
   im_Lab2LabQ(), im_LabQ2Lab(), im_Lab2LabS(), im_LabS2Lab(), im_LabQ2LabS(),
-  im_LabS2LabQ(), im_LabQ2disp() as classes
+  im_LabS2LabQ(), im_LabQ2disp(), im_XYZ2disp(), im_disp2XYZ() as classes
 
 13/9/12 started 7.30.3
 - linecache sized itself too large
diff --git a/libvips/colour/LCh2Lab.c b/libvips/colour/LCh2Lab.c
index 8e3221f3..5743ca0a 100644
--- a/libvips/colour/LCh2Lab.c
+++ b/libvips/colour/LCh2Lab.c
@@ -96,11 +96,14 @@ vips_LCh2Lab_line( VipsColour *colour, VipsPel *out, VipsPel **in, int width )
 void
 vips_col_Ch2ab( float C, float h, float *a, float *b )
 {
-	float in[3], out[3];
+	float in[3];
+	float out[3];
+	float *x;
 
 	in[1] = C;
 	in[2] = h;
-	vips_LCh2Lab_line( NULL, (VipsPel *) out, (VipsPel **) &in, 1 );
+	x = in;
+	vips_LCh2Lab_line( NULL, (VipsPel *) out, (VipsPel **) &x, 1 );
 	*a = out[1];
 	*b = out[2];
 }
diff --git a/libvips/colour/Lab2XYZ.c b/libvips/colour/Lab2XYZ.c
index d47fad75..6dd67a80 100644
--- a/libvips/colour/Lab2XYZ.c
+++ b/libvips/colour/Lab2XYZ.c
@@ -230,17 +230,20 @@ vips_Lab2XYZ( VipsImage *in, VipsImage **out, ... )
 void
 vips_col_Lab2XYZ( float L, float a, float b, float *X, float *Y, float *Z )
 {	
-	float in[3], out[3];
+	float in[3];
+	float *x;
+	float out[3];
 	VipsLab2XYZ Lab2XYZ;
 
 	in[0] = L;
 	in[1] = a;
 	in[2] = b;
+	x = in;
 	Lab2XYZ.X0 = VIPS_D65_X0;
 	Lab2XYZ.Y0 = VIPS_D65_Y0;
 	Lab2XYZ.Z0 = VIPS_D65_Z0;
 	vips_Lab2XYZ_line( (VipsColour *) &Lab2XYZ, 
-		(VipsPel *) out, (VipsPel **) &in, 1 );
+		(VipsPel *) out, (VipsPel **) &x, 1 );
 	*X = out[0];
 	*Y = out[1];
 	*Z = out[2];
diff --git a/libvips/colour/LabQ2sRGB.c b/libvips/colour/LabQ2sRGB.c
index 4a3339ca..b736c9f1 100644
--- a/libvips/colour/LabQ2sRGB.c
+++ b/libvips/colour/LabQ2sRGB.c
@@ -47,6 +47,7 @@
 #include <math.h>
  
 #include <vips/vips.h>
+#include <vips/internal.h>
 
 #include "colour.h"
 
@@ -82,6 +83,23 @@ struct im_col_display {
 	float d_P;			/* 'Picture' (like contrast) */
 };
 
+/* Structure for holding the lookup tables for XYZ<=>rgb conversion.
+ * Also holds the luminance to XYZ matrix and the inverse one.
+ */
+struct im_col_tab_disp {
+	/*< private >*/
+	float	t_Yr2r[1501];		/* Conversion of Yr to r */
+	float	t_Yg2g[1501];		/* Conversion of Yg to g */
+	float	t_Yb2b[1501];		/* Conversion of Yb to b */
+	float	t_r2Yr[1501];		/* Conversion of r to Yr */
+	float	t_g2Yg[1501];		/* Conversion of g to Yg */
+	float	t_b2Yb[1501];		/* Conversion of b to Yb */
+	float	mat_XYZ2lum[3][3];	/* XYZ to Yr, Yg, Yb matrix */
+	float	mat_lum2XYZ[3][3];	/* Yr, Yg, Yb to XYZ matrix */
+	float rstep, gstep, bstep;
+	float ristep, gistep, bistep;
+};
+
 /* Do our own indexing of the arrays below to make sure we get efficient mults.
  */
 #define INDEX( L, A, B ) (L + (A << 6) + (B << 12))
@@ -115,8 +133,9 @@ static VipsPel vips_blue[64 * 64 * 64];
 /* Make look_up tables for the Yr,Yb,Yg <=> r,g,b conversions.
  */
 static void *
-calcul_tables( struct im_col_tab_disp *table )
+calcul_tables( void *client )
 {
+	struct im_col_tab_disp *table = client;
 	struct im_col_display *d = &srgb_profile;
 
 	int i, j;
@@ -253,10 +272,11 @@ vips_col_sRGB2XYZ( int r, int g, int b, float *X, float *Y, float *Z )
  * contain an approximation of the right colour.
  */
 int
-vips_col_XYZ2rgb( float X, float Y, float Z, 
+vips_col_XYZ2sRGB( float X, float Y, float Z, 
 	int *r_ret, int *g_ret, int *b_ret, 
 	int *or_ret )
 {
+	struct im_col_display *d = &srgb_profile;
 	struct im_col_tab_disp *table = vips_col_make_tables_RGB();
 	float *mat = &table->mat_XYZ2lum[0][0];
 
@@ -291,24 +311,15 @@ vips_col_XYZ2rgb( float X, float Y, float Z,
 	 * luminosity. 
 	 */
 	Yint = (Yr - d->d_Y0R) / table->rstep;
-	if( Yint > 1500 ) {
-		or = 1;
-		Yint = 1500;
-	}
+	Yint = VIPS_CLIP( 0, Yint, 1500 ); 
 	r = IM_RINT( table->t_Yr2r[Yint] );
 
 	Yint = (Yg - d->d_Y0G) / table->gstep;
-	if( Yint > 1500 ) {
-		or = 1;
-		Yint = 1500;
-	}
+	Yint = VIPS_CLIP( 0, Yint, 1500 ); 
 	g = IM_RINT( table->t_Yg2g[Yint] );
 
 	Yint = (Yb - d->d_Y0B) / table->bstep;
-	if( Yint > 1500 ) {
-		or = 1;
-		Yint = 1500;
-	}
+	Yint = VIPS_CLIP( 0, Yint, 1500 ); 
 	b = IM_RINT( table->t_Yb2b[Yint] );
 
 	*r_ret = r;
@@ -322,8 +333,8 @@ vips_col_XYZ2rgb( float X, float Y, float Z,
 
 /* Build Lab->disp tables. 
  */
-static void 
-build_tables( void )
+static void *
+build_tables( void *client )
 {
         int l, a, b;
 	int t;
@@ -341,7 +352,7 @@ build_tables( void )
                                 int oflow;
  
                                 vips_col_Lab2XYZ( L, A, B, &X, &Y, &Z );
-                                vips_col_XYZ2rgb( X, Y, Z, 
+                                vips_col_XYZ2sRGB( X, Y, Z, 
 					&rb, &gb, &bb, &oflow );
 
 				t = INDEX( l, a, b );
@@ -351,6 +362,8 @@ build_tables( void )
                         }
                 }
         }
+
+	return( NULL );
 }
 
 static void
@@ -358,7 +371,7 @@ vips_col_make_tables_LabQ2sRGB( void )
 {
 	static GOnce once = G_ONCE_INIT;
 
-	(void) g_once( &once, calcul_tables, NULL );
+	(void) g_once( &once, build_tables, NULL );
 }
 
 /* Process a buffer of data.
diff --git a/libvips/colour/Makefile.am b/libvips/colour/Makefile.am
index 3ea35fdb..54a26eb2 100644
--- a/libvips/colour/Makefile.am
+++ b/libvips/colour/Makefile.am
@@ -22,12 +22,12 @@ libcolour_la_SOURCES = \
 	LabS2LabQ.c \
 	LabQ2LabS.c \
 	LabQ2sRGB.c \
+	XYZ2sRGB.c \
+	sRGB2XYZ.c \
 	im_icc_transform.c \
 	im_lab_morph.c \
-	im_XYZ2disp.c \
 	im_dE00_fromLab.c \
 	im_dECMC_fromLab.c \
-	im_dE_fromLab.c \
-	im_disp2XYZ.c
+	im_dE_fromLab.c
 
 INCLUDES = -I${top_srcdir}/libvips/include @VIPS_CFLAGS@ @VIPS_INCLUDES@ 
diff --git a/libvips/colour/XYZ2Lab.c b/libvips/colour/XYZ2Lab.c
index 51fd266e..1b39d674 100644
--- a/libvips/colour/XYZ2Lab.c
+++ b/libvips/colour/XYZ2Lab.c
@@ -172,17 +172,20 @@ vips_XYZ2Lab_line( VipsColour *colour, VipsPel *out, VipsPel **in, int width )
 void
 vips_col_XYZ2Lab( float X, float Y, float Z, float *L, float *a, float *b )
 {	
-	float in[3], out[3];
+	float in[3];
+	float out[3];
+	float *x;
 	VipsXYZ2Lab XYZ2Lab;
 
 	in[0] = X;
 	in[1] = Y;
 	in[2] = Z;
+	x = in;
 	XYZ2Lab.X0 = VIPS_D65_X0;
 	XYZ2Lab.Y0 = VIPS_D65_Y0;
 	XYZ2Lab.Z0 = VIPS_D65_Z0;
 	vips_XYZ2Lab_line( (VipsColour *) &XYZ2Lab, 
-		(VipsPel *) out, (VipsPel **) &in, 1 );
+		(VipsPel *) out, (VipsPel **) &x, 1 );
 	*L = out[0];
 	*a = out[1];
 	*b = out[2];
diff --git a/libvips/colour/XYZ2sRGB.c b/libvips/colour/XYZ2sRGB.c
new file mode 100644
index 00000000..83fcb1e2
--- /dev/null
+++ b/libvips/colour/XYZ2sRGB.c
@@ -0,0 +1,148 @@
+/* Turn XYZ files into displayable rgb.
+ *
+ * Author: J-P. Laurent
+ * Modified:
+ * 15/11/94 JC
+ *	- error message added
+ *	- out->Type set to IM_TYPE_RGB
+ *	- memory leak fixed
+ * 16/11/94 JC
+ *	- uses im_wrapone()
+ * 15/2/95 JC
+ *	- oops! now uses PEL, not float for output pointer
+ * 2/1/96 JC
+ *	- sometimes produced incorrect result at extrema
+ *	- reformatted
+ *	- now uses IM_RINT() and clip()
+ * 18/9/96 JC
+ *	- some speed-ups ... 3x faster
+ *	- slightly less accurate, but who cares
+ *	- added out-of-mem check for table build
+ * 21/9/12
+ * 	- redone as a class
+ * 	- sRGB only, support for other RGBs is now via lcms
+ */
+
+/*
+
+    This file is part of VIPS.
+    
+    VIPS is free software; you can redistribute it and/or modify
+    it under the terms of the GNU Lesser General Public License as published by
+    the Free Software Foundation; either version 2 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU Lesser General Public License for more details.
+
+    You should have received a copy of the GNU Lesser General Public License
+    along with this program; if not, write to the Free Software
+    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+
+ */
+
+/*
+
+    These files are distributed with VIPS - http://www.vips.ecs.soton.ac.uk
+
+ */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif /*HAVE_CONFIG_H*/
+#include <vips/intl.h>
+
+#include <stdio.h>
+#include <math.h>
+
+#include <vips/vips.h>
+
+#include "colour.h"
+
+typedef VipsColourCode VipsXYZ2sRGB;
+typedef VipsColourCodeClass VipsXYZ2sRGBClass;
+
+G_DEFINE_TYPE( VipsXYZ2sRGB, vips_XYZ2sRGB, VIPS_TYPE_COLOUR_CODE );
+
+/* Process a buffer of data.
+ */
+static void
+vips_XYZ2sRGB_line( VipsColour *colour, VipsPel *out, VipsPel **in, int width )
+{
+	float *p = (float *) in[0];
+	VipsPel *q = (VipsPel *) out;
+
+	int i;
+
+	for( i = 0; i < width; i++ ) {
+		float X = p[0];
+		float Y = p[1];
+		float Z = p[2];
+
+		int r, g, b;
+		int or;
+
+		vips_col_XYZ2sRGB( X, Y, Z, &r, &g, &b, &or );
+
+		p += 3;
+
+		q[0] = r;
+		q[1] = g;
+		q[2] = b;
+
+		q += 3;
+	}
+}
+
+static void
+vips_XYZ2sRGB_class_init( VipsXYZ2sRGBClass *class )
+{
+	VipsObjectClass *object_class = (VipsObjectClass *) class;
+	VipsColourClass *colour_class = VIPS_COLOUR_CLASS( class );
+	VipsColourCodeClass *code_class = VIPS_COLOUR_CODE_CLASS( class );
+
+	object_class->nickname = "XYZ2sRGB";
+	object_class->description = _( "convert an XYZ image to sRGB" ); 
+
+	colour_class->process_line = vips_XYZ2sRGB_line;
+	colour_class->coding = VIPS_CODING_NONE;
+	colour_class->interpretation = VIPS_INTERPRETATION_sRGB;
+	colour_class->format = VIPS_FORMAT_UCHAR;
+	colour_class->bands = 3;
+
+	code_class->input_coding = VIPS_CODING_NONE;
+	code_class->input_bands = 3;
+	code_class->input_format = VIPS_FORMAT_FLOAT;
+}
+
+static void
+vips_XYZ2sRGB_init( VipsXYZ2sRGB *XYZ2sRGB )
+{
+}
+
+/**
+ * vips_XYZ2sRGB:
+ * @in: input image
+ * @out: output image
+ *
+ * Convert an XYZ image to sRGB.
+ *
+ * See also: im_LabS2LabQ(), im_XYZ2sRGB(), im_rad2float().
+ *
+ * Returns: 0 on success, -1 on error.
+ */
+int
+vips_XYZ2sRGB( VipsImage *in, VipsImage **out, ... )
+{
+	va_list ap;
+	int result;
+
+	va_start( ap, out );
+	result = vips_call_split( "XYZ2sRGB", ap, in, out );
+	va_end( ap );
+
+	return( result );
+}
+
diff --git a/libvips/colour/colour.c b/libvips/colour/colour.c
index e4b74844..0e7435a6 100644
--- a/libvips/colour/colour.c
+++ b/libvips/colour/colour.c
@@ -389,6 +389,9 @@ vips_colour_operation_init( void )
 	extern GType vips_Lab2LabS_get_type( void ); 
 	extern GType vips_rad2float_get_type( void ); 
 	extern GType vips_float2rad_get_type( void ); 
+	extern GType vips_LabQ2sRGB_get_type( void ); 
+	extern GType vips_XYZ2sRGB_get_type( void ); 
+	extern GType vips_sRGB2XYZ_get_type( void ); 
 
 	vips_Lab2XYZ_get_type();
 	vips_XYZ2Lab_get_type();
@@ -406,4 +409,7 @@ vips_colour_operation_init( void )
 	vips_Lab2LabS_get_type();
 	vips_rad2float_get_type();
 	vips_float2rad_get_type();
+	vips_LabQ2sRGB_get_type();
+	vips_XYZ2sRGB_get_type();
+	vips_sRGB2XYZ_get_type();
 }
diff --git a/libvips/colour/colour_funcs.c b/libvips/colour/colour_funcs.c
index fbce34f3..9735a978 100644
--- a/libvips/colour/colour_funcs.c
+++ b/libvips/colour/colour_funcs.c
@@ -294,20 +294,6 @@ im_col_dE00( float L1, float a1, float b1,
 /* Quick hack wrappers for common colour functions in the new style.
  */
 
-int
-vips_LabQ2disp( VipsImage *in, VipsImage **out, 
-	struct im_col_display *disp, ... )
-{
-	va_list ap;
-	int result;
-
-	va_start( ap, disp );
-	result = vips_call_split( "im_LabQ2disp", ap, in, out, disp );
-	va_end( ap );
-
-	return( result );
-}
-
 int
 vips_argb2rgba( VipsImage *in, VipsImage **out, ... )
 {
@@ -347,21 +333,6 @@ vips_UCS2XYZ( VipsImage *in, VipsImage **out, ... )
 	return( result );
 }
 
-int
-vips_XYZ2disp( VipsImage *in, VipsImage **out, 
-	struct im_col_display *disp, ... )
-{
-	va_list ap;
-	int result;
-
-	va_start( ap, disp );
-	result = vips_call_split( "im_XYZ2disp", ap, in, out, disp );
-	va_end( ap );
-
-	return( result );
-}
-
-
 int
 im__colour_unary( const char *domain,
 	IMAGE *in, IMAGE *out, VipsType type,
diff --git a/libvips/colour/derived.c b/libvips/colour/derived.c
index 924594b9..f3af723c 100644
--- a/libvips/colour/derived.c
+++ b/libvips/colour/derived.c
@@ -158,53 +158,6 @@ im_XYZ2UCS( IMAGE *in, IMAGE *out )
 	return( 0 );
 }
 
-/**
- * im_XYZ2sRGB:
- * @in: input image
- * @out: output image
- *
- * Convert an image from XYZ to sRGB. The conversion is supposed to be quick
- * rather than accurate. Use an ICC profile with im_icc_transform() for more
- * precision.
- *
- * See also: im_icc_transform.
- *
- * Returns: 0 on success, -1 on error.
- */
-int 
-im_XYZ2sRGB( IMAGE *in, IMAGE *out )
-{	
-	if( im_XYZ2disp( in, out, im_col_displays( 7 ) ) )
-		return( -1 );
-
-	out->Type = IM_TYPE_sRGB;
-
-	return( 0 );
-}
-
-/**
- * im_sRGB2XYZ:
- * @in: input image
- * @out: output image
- *
- * Convert an image from sRGB to XYZ. 
- * The conversion is supposed to be quick
- * rather than accurate. Use an ICC profile with im_icc_transform() for more
- * precision.
- *
- * See also: im_icc_transform.
- *
- * Returns: 0 on success, -1 on error.
- */
-int 
-im_sRGB2XYZ( IMAGE *in, IMAGE *out )
-{
-	if( im_disp2XYZ( in, out, im_col_displays( 7 ) ) )
-		return( -1 );
-
-	return( 0 );
-}
-
 /**
  * im_dE_fromXYZ:
  * @in1: first input image
diff --git a/libvips/colour/im_XYZ2disp.c b/libvips/colour/im_XYZ2disp.c
deleted file mode 100644
index 47cc701e..00000000
--- a/libvips/colour/im_XYZ2disp.c
+++ /dev/null
@@ -1,155 +0,0 @@
-/* @(#) Turn XYZ files into displayable rgb.
- * @(#) 
- * @(#) Usage: 	
- * @(#)   int im_XYZ2disp( IMAGE *in, IMAGE *out, struct im_col_display *d )
- * @(#) 
- * @(#) Returns: -1 on error, else 0
- *
- * Author: J-P. Laurent
- * Modified:
- * 15/11/94 JC
- *	- error message added
- *	- out->Type set to IM_TYPE_RGB
- *	- memory leak fixed
- * 16/11/94 JC
- *	- uses im_wrapone()
- * 15/2/95 JC
- *	- oops! now uses PEL, not float for output pointer
- * 2/1/96 JC
- *	- sometimes produced incorrect result at extrema
- *	- reformatted
- *	- now uses IM_RINT() and clip()
- * 18/9/96 JC
- *	- some speed-ups ... 3x faster
- *	- slightly less accurate, but who cares
- *	- added out-of-mem check for table build
- */
-
-/*
-
-    This file is part of VIPS.
-    
-    VIPS is free software; you can redistribute it and/or modify
-    it under the terms of the GNU Lesser General Public License as published by
-    the Free Software Foundation; either version 2 of the License, or
-    (at your option) any later version.
-
-    This program is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-    GNU Lesser General Public License for more details.
-
-    You should have received a copy of the GNU Lesser General Public License
-    along with this program; if not, write to the Free Software
-    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
-
- */
-
-/*
-
-    These files are distributed with VIPS - http://www.vips.ecs.soton.ac.uk
-
- */
-
-#ifdef HAVE_CONFIG_H
-#include <config.h>
-#endif /*HAVE_CONFIG_H*/
-#include <vips/intl.h>
-
-#include <stdio.h>
-#include <math.h>
-
-#include <vips/vips.h>
-#include <vips/internal.h>
-
-/* Process a buffer of data.
- */
-void
-imb_XYZ2disp( float *p, VipsPel *q, int n, struct im_col_display *d )
-{
-	struct im_col_tab_disp *table = im_col_display_get_table( d );
-	float rstep = (d->d_YCR - d->d_Y0R) / 1500.0;
-	float gstep = (d->d_YCG - d->d_Y0G) / 1500.0;
-	float bstep = (d->d_YCB - d->d_Y0B) / 1500.0;
-
-	int x;
-
-	for( x = 0; x < n; x++ ) {
-		float Yr, Yg, Yb;
-		int i;
-		int r, g, b;
-
-		float X = p[0];
-		float Y = p[1];
-		float Z = p[2];
-
-		p += 3;
-
-		/* Multiply through the matrix to get luminosity values. 
-		 */
-		Yr =  table->mat_XYZ2lum[0][0] * X 
-		    + table->mat_XYZ2lum[0][1] * Y 
-		    + table->mat_XYZ2lum[0][2] * Z;
-		Yg =  table->mat_XYZ2lum[1][0] * X 
-		    + table->mat_XYZ2lum[1][1] * Y 
-		    + table->mat_XYZ2lum[1][2] * Z;
-		Yb =  table->mat_XYZ2lum[2][0] * X 
-		    + table->mat_XYZ2lum[2][1] * Y 
-		    + table->mat_XYZ2lum[2][2] * Z;
-
-		/* Clip -ves.
-		 */
-		Yr = IM_MAX( Yr, d->d_Y0R );
-		Yg = IM_MAX( Yg, d->d_Y0G );
-		Yb = IM_MAX( Yb, d->d_Y0B );
-
-		/* Turn luminosity to colour value.
-		 */
-		i = IM_MIN( 1500, (Yr - d->d_Y0R) / rstep );
-		r = table->t_Yr2r[i];
-
-		i = IM_MIN( 1500, (Yg - d->d_Y0G) / gstep );
-		g = table->t_Yg2g[i];
-
-		i = IM_MIN( 1500, (Yb - d->d_Y0B) / bstep );
-		b = table->t_Yb2b[i];
-
-		/* Clip output.
-		 */
-		r = IM_MIN( r, d->d_Vrwr );
-		g = IM_MIN( g, d->d_Vrwg );
-		b = IM_MIN( b, d->d_Vrwb );
-
-		q[0] = r;
-		q[1] = g;
-		q[2] = b;
-
-		q += 3;
-	}
-}
-
-int 
-im_XYZ2disp( IMAGE *in, IMAGE *out, struct im_col_display *d )
-{	
-	/* Check input image.
-	 */
-	if( in->Bands != 3 || in->BandFmt != IM_BANDFMT_FLOAT || 
-		in->Coding != IM_CODING_NONE ) {
-		im_error( "im_XYZ2disp", 
-			"%s", _( "3-band uncoded float only" ) );
-		return( -1 );
-	}
-
-	if( im_cp_desc( out, in ) )
-		return( -1 );
-	out->BandFmt = IM_BANDFMT_UCHAR;
-	out->Type = IM_TYPE_RGB;
-
-	/* Do the processing.
-	 */
-	if( im_wrapone( in, out, 
-		(im_wrapone_fn) imb_XYZ2disp, d, NULL ) )
-		return( -1 );
-
-	return( 0 );
-}
diff --git a/libvips/colour/im_disp2XYZ.c b/libvips/colour/im_disp2XYZ.c
deleted file mode 100644
index bec0608b..00000000
--- a/libvips/colour/im_disp2XYZ.c
+++ /dev/null
@@ -1,104 +0,0 @@
-/* @(#) Turn displayable rgb files to XYZ.
- * @(#) 
- * @(#) Usage: 	
- * @(#) 	im_disp2XYZ( imagein, imageout, display )
- * @(#) 	IMAGE		*imagein, *imageout;
- * @(#)		struct im_col_display	*display;
- * @(#) 
- * @(#) uchar in, float out.
- * @(#) 
- * @(#) Returns: -1 on error, else 0
- * Modified:
- * 15/11/94 JC
- *	- memory leak fixed
- *	- error message added
- * 16/11/94 JC
- *	- partialed
- */
-
-/*
-
-    This file is part of VIPS.
-    
-    VIPS is free software; you can redistribute it and/or modify
-    it under the terms of the GNU Lesser General Public License as published by
-    the Free Software Foundation; either version 2 of the License, or
-    (at your option) any later version.
-
-    This program is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-    GNU Lesser General Public License for more details.
-
-    You should have received a copy of the GNU Lesser General Public License
-    along with this program; if not, write to the Free Software
-    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
-
- */
-
-/*
-
-    These files are distributed with VIPS - http://www.vips.ecs.soton.ac.uk
-
- */
-
-#ifdef HAVE_CONFIG_H
-#include <config.h>
-#endif /*HAVE_CONFIG_H*/
-#include <vips/intl.h>
-
-#include <stdio.h>
-#include <math.h>
-
-#include <vips/vips.h>
-
-/* Convert a buffer.
- */
-void
-imb_disp2XYZ( VipsPel *p, float *q, int n, struct im_col_display *d )
-{
-	int x;
-
-	for( x = 0; x < n; x++ ) {
-		int r = p[0];
-		int g = p[1];
-		int b = p[2];
-		float X, Y, Z;
-		p += 3;
-
-		im_col_rgb2XYZ( d, r, g, b, &X, &Y, &Z );
-
-		q[0] = X;
-		q[1] = Y;
-		q[2] = Z;
-		q += 3;
-	}
-}
-
-int 
-im_disp2XYZ( IMAGE *in, IMAGE *out, struct im_col_display *d )
-{	
-	/* Check input image.
-	 */
-	if( in->Bands != 3 || in->BandFmt != IM_BANDFMT_UCHAR || 
-		in->Coding != IM_CODING_NONE ) {
-		im_error( "im_disp2XYZ", 
-			"%s", _( "input not 3-band uncoded char" ) );
-		return( -1 );
-	}
-
-	/* Prepare the output image 
-	 */
-	if( im_cp_desc( out, in ) )
-		return( -1 );
-	out->BandFmt = IM_BANDFMT_FLOAT;
-	out->Type = IM_TYPE_XYZ;
-
-	/* Do the processing.
-	 */
-	if( im_wrapone( in, out,
-		(im_wrapone_fn) imb_disp2XYZ, d, NULL ) )
-		return( -1 );
-
-	return( 0 );
-}
diff --git a/libvips/colour/sRGB2XYZ.c b/libvips/colour/sRGB2XYZ.c
new file mode 100644
index 00000000..87307768
--- /dev/null
+++ b/libvips/colour/sRGB2XYZ.c
@@ -0,0 +1,134 @@
+/* Turn displayable rgb files to XYZ.
+ *
+ * Modified:
+ * 15/11/94 JC
+ *	- memory leak fixed
+ *	- error message added
+ * 16/11/94 JC
+ *	- partialed
+ * 21/9/12
+ * 	- redone as a class
+ * 	- sRGB only, support for other RGBs is now via lcms
+ */
+
+/*
+
+    This file is part of VIPS.
+    
+    VIPS is free software; you can redistribute it and/or modify
+    it under the terms of the GNU Lesser General Public License as published by
+    the Free Software Foundation; either version 2 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU Lesser General Public License for more details.
+
+    You should have received a copy of the GNU Lesser General Public License
+    along with this program; if not, write to the Free Software
+    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+
+ */
+
+/*
+
+    These files are distributed with VIPS - http://www.vips.ecs.soton.ac.uk
+
+ */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif /*HAVE_CONFIG_H*/
+#include <vips/intl.h>
+
+#include <stdio.h>
+#include <math.h>
+
+#include <vips/vips.h>
+
+#include "colour.h"
+
+typedef VipsColourCode VipssRGB2XYZ;
+typedef VipsColourCodeClass VipssRGB2XYZClass;
+
+G_DEFINE_TYPE( VipssRGB2XYZ, vips_sRGB2XYZ, VIPS_TYPE_COLOUR_CODE );
+
+/* Convert a buffer.
+ */
+static void
+vips_sRGB2XYZ_line( VipsColour *colour, VipsPel *out, VipsPel **in, int width )
+{
+	VipsPel *p = in[0];
+	float *q = (float *) out;
+
+	int i;
+
+	for( i = 0; i < width; i++ ) {
+		int r = p[0];
+		int g = p[1];
+		int b = p[2];
+		float X, Y, Z;
+
+		p += 3;
+
+		vips_col_sRGB2XYZ( r, g, b, &X, &Y, &Z );
+
+		q[0] = X;
+		q[1] = Y;
+		q[2] = Z;
+
+		q += 3;
+	}
+}
+
+static void
+vips_sRGB2XYZ_class_init( VipssRGB2XYZClass *class )
+{
+	VipsObjectClass *object_class = (VipsObjectClass *) class;
+	VipsColourClass *colour_class = VIPS_COLOUR_CLASS( class );
+	VipsColourCodeClass *code_class = VIPS_COLOUR_CODE_CLASS( class );
+
+	object_class->nickname = "sRGB2XYZ";
+	object_class->description = _( "convert an sRGB image to XYZ" );
+
+	colour_class->process_line = vips_sRGB2XYZ_line;
+	colour_class->coding = VIPS_CODING_NONE;
+	colour_class->interpretation = VIPS_INTERPRETATION_XYZ;
+	colour_class->format = VIPS_FORMAT_FLOAT;
+	colour_class->bands = 3;
+
+	code_class->input_coding = VIPS_CODING_NONE;
+	code_class->input_bands = 3;
+	code_class->input_format = VIPS_FORMAT_UCHAR;
+}
+
+static void
+vips_sRGB2XYZ_init( VipssRGB2XYZ *sRGB2XYZ )
+{
+}
+
+/**
+ * vips_sRGB2XYZ:
+ * @in: input image
+ * @out: output image
+ *
+ * Convert an sRGB image to XYZ.
+ *
+ * See also: im_LabS2LabQ(), im_sRGB2XYZ(), im_rad2float().
+ *
+ * Returns: 0 on success, -1 on error.
+ */
+int
+vips_sRGB2XYZ( VipsImage *in, VipsImage **out, ... )
+{
+	va_list ap;
+	int result;
+
+	va_start( ap, out );
+	result = vips_call_split( "sRGB2XYZ", ap, in, out );
+	va_end( ap );
+
+	return( result );
+}
+
diff --git a/libvips/deprecated/dispatch_types.c b/libvips/deprecated/dispatch_types.c
index 9ff4f932..d9863ae5 100644
--- a/libvips/deprecated/dispatch_types.c
+++ b/libvips/deprecated/dispatch_types.c
@@ -57,28 +57,12 @@
  */
 #define VEC_SEPS " "
 
-/* Init function for input displays.
+/* Init function for input displays. Just a stub nowadays.
  */
 static int
 input_display_init( im_object *obj, char *str )
 {
-	struct im_col_display *scr = im_col_display_name( str );
-
-        if( !scr ) {
-		int i;
-
-		vips_error( "input_display", 
-			_( "unknown display type \"%s\"" ), str );
-		vips_error( "input_display", "%s", 
-			_( "display should be one of:\n" ) );
-                for( i = 0; (scr = im_col_displays( i )); i++ )
-			vips_error( "input_display", 
-				"  '%s'\n", scr->d_name );
-
-		return( -1 );
-        }
-
-	*obj = scr;
+	*obj = NULL;
 
 	return( 0 );
 }
@@ -97,7 +81,7 @@ im_type_desc im__input_display = {
  */
 im_type_desc im__output_display = {
 	IM_TYPE_DISPLAY,		/* It's a display */
-	sizeof( struct im_col_display ),/* Memory to allocate */
+	sizeof( void * ),		/* Memory to allocate */
 	IM_TYPE_OUTPUT,			/* Output object */
 	NULL,				/* Init function */
 	NULL				/* Destroy function */
@@ -739,62 +723,6 @@ im__dmsprint( im_object obj )
 	return( 0 );
 }
 
-static char *decode_dtype( enum im_col_disp_type type )
-{
-	switch( type ) {
-	case DISP_BARCO: 
-		return( "DISP_BARCO" );
-	case DISP_DUMB: 
-		return( "DISP_DUMB" );
-	default:
-		return( "<unknown display type>" );
-	}
-}
-
-/* Print display stuff.
- */
-int
-im__displayprint( im_object obj )
-{
-	struct im_col_display *scr = (struct im_col_display *) obj;
-
-	printf( "im_col_display:\n" );
-	printf( "\td_name: %s\n", scr->d_name );
-	printf( "\td_type: %s\n", decode_dtype( scr->d_type ) );
-	printf( "\td_mat:\n" );
-	printf( "\t\t %g %g %g\n", 
-		scr->d_mat[0][0], scr->d_mat[0][1], scr->d_mat[0][2] );
-	printf( "\t\t %g %g %g\n", 
-		scr->d_mat[1][0], scr->d_mat[1][1], scr->d_mat[1][2] );
-	printf( "\t\t %g %g %g\n", 
-		scr->d_mat[2][0], scr->d_mat[2][1], scr->d_mat[2][2] );
-
-	printf( "\td_YCW: %g\n", scr->d_YCW );
-	printf( "\td_xCW: %g\n", scr->d_xCW );
-	printf( "\td_yCW: %g\n", scr->d_yCW );
-
-	printf( "\td_YCR: %g\n", scr->d_YCR );
-	printf( "\td_YCG: %g\n", scr->d_YCG );
-	printf( "\td_YCB: %g\n", scr->d_YCB );
-
-	printf( "\td_Vrwr: %d\n", scr->d_Vrwr );
-	printf( "\td_Vrwg: %d\n", scr->d_Vrwg );
-	printf( "\td_Vrwb: %d\n", scr->d_Vrwb );
-
-	printf( "\td_Y0R: %g\n", scr->d_Y0R );
-	printf( "\td_Y0G: %g\n", scr->d_Y0G );
-	printf( "\td_Y0B: %g\n", scr->d_Y0B );
-
-	printf( "\td_gammaR: %g\n", scr->d_gammaR );
-	printf( "\td_gammaG: %g\n", scr->d_gammaG );
-	printf( "\td_gammaB: %g\n", scr->d_gammaB );
-
-	printf( "\td_B: %g\n", scr->d_B );
-	printf( "\td_P: %g\n", scr->d_P );
-
-	return( 0 );
-}
-
 /* GValue
  */
 
diff --git a/libvips/deprecated/vips7compat.c b/libvips/deprecated/vips7compat.c
index 83fdd778..e2f4d8ff 100644
--- a/libvips/deprecated/vips7compat.c
+++ b/libvips/deprecated/vips7compat.c
@@ -2508,3 +2508,51 @@ im_disp2Lab( IMAGE *in, IMAGE *out, struct im_col_display *d )
 	
 	return( 0 );
 }
+
+int 
+im_sRGB2XYZ( IMAGE *in, IMAGE *out )
+{
+	VipsImage *x;
+
+	if( vips_sRGB2XYZ( in, &x, NULL ) )
+		return( -1 );
+	if( im_copy( x, out ) ) {
+		g_object_unref( x );
+		return( -1 );
+	}
+	g_object_unref( x );
+
+	return( 0 );
+}
+
+int 
+im_XYZ2sRGB( IMAGE *in, IMAGE *out )
+{
+	VipsImage *x;
+
+	if( vips_XYZ2sRGB( in, &x, NULL ) )
+		return( -1 );
+	if( im_copy( x, out ) ) {
+		g_object_unref( x );
+		return( -1 );
+	}
+	g_object_unref( x );
+
+	return( 0 );
+}
+
+int 
+im_LabQ2sRGB( IMAGE *in, IMAGE *out )
+{
+	VipsImage *x;
+
+	if( vips_LabQ2sRGB( in, &x, NULL ) )
+		return( -1 );
+	if( im_copy( x, out ) ) {
+		g_object_unref( x );
+		return( -1 );
+	}
+	g_object_unref( x );
+
+	return( 0 );
+}
diff --git a/libvips/foreign/foreign.c b/libvips/foreign/foreign.c
index 79ba8e0e..a76ccf98 100644
--- a/libvips/foreign/foreign.c
+++ b/libvips/foreign/foreign.c
@@ -1116,7 +1116,7 @@ vips_foreign_convert_saveable( VipsForeignSave *save )
 	if( in->Coding == VIPS_CODING_LABQ ) {
 		VipsImage *out;
 
-		if( vips_LabQ2disp( in, &out, im_col_displays( 7 ), NULL ) ) {
+		if( vips_LabQ2sRGB( in, &out, NULL ) ) {
 			g_object_unref( in );
 			return( -1 );
 		}
@@ -1300,7 +1300,7 @@ vips_foreign_convert_saveable( VipsForeignSave *save )
 		in->Type == VIPS_INTERPRETATION_LAB ) {
 		VipsImage *out;
 
-		if( vips_XYZ2disp( in, &out, im_col_displays( 7 ), NULL ) ) {
+		if( vips_XYZ2sRGB( in, &out, NULL ) ) {
 			g_object_unref( in );
 			return( -1 );
 		}
diff --git a/libvips/include/vips/colour.h b/libvips/include/vips/colour.h
index 46e92773..84282c2c 100644
--- a/libvips/include/vips/colour.h
+++ b/libvips/include/vips/colour.h
@@ -120,6 +120,8 @@ int vips_XYZ2Lab( VipsImage *in, VipsImage **out, ... )
 	__attribute__((sentinel));
 int vips_XYZ2sRGB( VipsImage *in, VipsImage **out, ... )
 	__attribute__((sentinel));
+int vips_sRGB2XYZ( VipsImage *in, VipsImage **out, ... )
+	__attribute__((sentinel));
 int vips_LCh2UCS( VipsImage *in, VipsImage **out, ... )
 	__attribute__((sentinel));
 int vips_UCS2LCh( VipsImage *in, VipsImage **out, ... )
@@ -174,8 +176,6 @@ int im_UCS2XYZ( VipsImage *in, VipsImage *out );
 int im_UCS2Lab( VipsImage *in, VipsImage *out );
 int im_Lab2UCS( VipsImage *in, VipsImage *out );
 int im_XYZ2UCS( VipsImage *in, VipsImage *out );
-int im_sRGB2XYZ( VipsImage *in, VipsImage *out );
-int im_XYZ2sRGB( VipsImage *in, VipsImage *out );
 
 int im_dECMC_fromLab( VipsImage *in1, VipsImage *in2, VipsImage *out );
 int im_dE00_fromLab( VipsImage *in1, VipsImage *in2, VipsImage *out );
diff --git a/libvips/include/vips/image.h b/libvips/include/vips/image.h
index fce5e34f..a513f112 100644
--- a/libvips/include/vips/image.h
+++ b/libvips/include/vips/image.h
@@ -109,27 +109,27 @@ typedef enum {
 
 /**
  * VipsInterpretation: 
- * @VIPS_INTERPREATION_MULTIBAND: generic many-band image
- * @VIPS_INTERPREATION_B_W: some kind of single-band image
- * @VIPS_INTERPREATION_HISTOGRAM: a 1D image such as a histogram or lookup table
- * @VIPS_INTERPREATION_FOURIER: image is in fourier space
- * @VIPS_INTERPREATION_XYZ: the first three bands are CIE XYZ 
- * @VIPS_INTERPREATION_LAB: pixels are in CIE Lab space
- * @VIPS_INTERPREATION_CMYK: the first four bands are in CMYK space
- * @VIPS_INTERPREATION_LABQ: implies #VIPS_CODING_LABQ
- * @VIPS_INTERPREATION_RGB: generic RGB space
- * @VIPS_INTERPREATION_UCS: a uniform colourspace based on CMC
- * @VIPS_INTERPREATION_LCH: pixels are in CIE LCh space
- * @VIPS_INTERPREATION_LABS: CIE LAB coded as three signed 16-bit values
- * @VIPS_INTERPREATION_sRGB: pixels are sRGB
- * @VIPS_INTERPREATION_YXY: pixels are CIE Yxy
- * @VIPS_INTERPREATION_RGB16: generic 16-bit RGB
- * @VIPS_INTERPREATION_GREY16: generic 16-bit mono
- * @VIPS_INTERPREATION_ARRAY: an array
+ * @VIPS_INTERPRETATION_MULTIBAND: generic many-band image
+ * @VIPS_INTERPRETATION_B_W: some kind of single-band image
+ * @VIPS_INTERPRETATION_HISTOGRAM: a 1D image, eg. histogram or lookup table
+ * @VIPS_INTERPRETATION_FOURIER: image is in fourier space
+ * @VIPS_INTERPRETATION_XYZ: the first three bands are CIE XYZ 
+ * @VIPS_INTERPRETATION_LAB: pixels are in CIE Lab space
+ * @VIPS_INTERPRETATION_CMYK: the first four bands are in CMYK space
+ * @VIPS_INTERPRETATION_LABQ: implies #VIPS_CODING_LABQ
+ * @VIPS_INTERPRETATION_RGB: generic RGB space
+ * @VIPS_INTERPRETATION_UCS: a uniform colourspace based on CMC
+ * @VIPS_INTERPRETATION_LCH: pixels are in CIE LCh space
+ * @VIPS_INTERPRETATION_LABS: CIE LAB coded as three signed 16-bit values
+ * @VIPS_INTERPRETATION_sRGB: pixels are sRGB
+ * @VIPS_INTERPRETATION_YXY: pixels are CIE Yxy
+ * @VIPS_INTERPRETATION_RGB16: generic 16-bit RGB
+ * @VIPS_INTERPRETATION_GREY16: generic 16-bit mono
+ * @VIPS_INTERPRETATION_ARRAY: an array
  *
  * How the values in an image should be interpreted. For example, a
- * three-band float image of type #VIPS_INTERPREATION_LAB should have its pixels
- * interpreted as coordinates in CIE Lab space.
+ * three-band float image of type #VIPS_INTERPRETATION_LAB should have its 
+ * pixels interpreted as coordinates in CIE Lab space.
  *
  * These values are set by operations as hints to user-interfaces built on top 
  * of VIPS to help them show images to the user in a meaningful way. 
@@ -143,7 +143,6 @@ typedef enum {
 	VIPS_INTERPRETATION_MULTIBAND = 0,
 	VIPS_INTERPRETATION_B_W = 1,
 	VIPS_INTERPRETATION_HISTOGRAM = 10,
-	VIPS_INTERPRETATION_FOURIER = 24,
 	VIPS_INTERPRETATION_XYZ = 12,
 	VIPS_INTERPRETATION_LAB = 13,
 	VIPS_INTERPRETATION_CMYK = 15,
@@ -154,6 +153,7 @@ typedef enum {
 	VIPS_INTERPRETATION_LABS = 21,
 	VIPS_INTERPRETATION_sRGB = 22,
 	VIPS_INTERPRETATION_YXY = 23,
+	VIPS_INTERPRETATION_FOURIER = 24,
 	VIPS_INTERPRETATION_RGB16 = 25,
 	VIPS_INTERPRETATION_GREY16 = 26,
 	VIPS_INTERPRETATION_ARRAY = 27
diff --git a/libvips/include/vips/vips7compat.h b/libvips/include/vips/vips7compat.h
index 28c7a7b2..4e7c396d 100644
--- a/libvips/include/vips/vips7compat.h
+++ b/libvips/include/vips/vips7compat.h
@@ -730,6 +730,25 @@ int im_Lab2LabS( VipsImage *in, VipsImage *out );
 int im_LabS2Lab( VipsImage *in, VipsImage *out );
 int im_LabQ2LabS( VipsImage *in, VipsImage *out );
 int im_LabS2LabQ( VipsImage *in, VipsImage *out );
+int im_LabQ2sRGB( VipsImage *in, VipsImage *out );
+
+int im_XYZ2sRGB( IMAGE *in, IMAGE *out );
+int im_sRGB2XYZ( IMAGE *in, IMAGE *out );
+
+struct im_col_display;
+#define im_col_displays(S) (NULL)
+#define im_LabQ2disp_build_table(A, B) (NULL)
+#define im_LabQ2disp_table(A, B, C) (im_LabQ2disp(A, B, C))
+
+int im_Lab2disp( IMAGE *in, IMAGE *out, struct im_col_display *disp );
+int im_disp2Lab( IMAGE *in, IMAGE *out, struct im_col_display *disp );
+
+int im_dE_fromdisp( IMAGE *, IMAGE *, IMAGE *, struct im_col_display * );
+int im_dECMC_fromdisp( IMAGE *, IMAGE *, IMAGE *, struct im_col_display * );
+
+#define im_disp2XYZ(A, B, C) (im_sRGB2XYZ(A, B))
+#define im_XYZ2disp(A, B, C) (im_XYZ2sRGB(A, B))
+#define im_LabQ2disp(A, B, C) (im_LabQ2sRGB(A, B))
 
 /* ruby-vips uses this
  */
diff --git a/libvips/iofuncs/enumtypes.c b/libvips/iofuncs/enumtypes.c
index aa2634d7..f4856ec4 100644
--- a/libvips/iofuncs/enumtypes.c
+++ b/libvips/iofuncs/enumtypes.c
@@ -423,7 +423,6 @@ vips_interpretation_get_type( void )
 			{VIPS_INTERPRETATION_MULTIBAND, "VIPS_INTERPRETATION_MULTIBAND", "multiband"},
 			{VIPS_INTERPRETATION_B_W, "VIPS_INTERPRETATION_B_W", "b-w"},
 			{VIPS_INTERPRETATION_HISTOGRAM, "VIPS_INTERPRETATION_HISTOGRAM", "histogram"},
-			{VIPS_INTERPRETATION_FOURIER, "VIPS_INTERPRETATION_FOURIER", "fourier"},
 			{VIPS_INTERPRETATION_XYZ, "VIPS_INTERPRETATION_XYZ", "xyz"},
 			{VIPS_INTERPRETATION_LAB, "VIPS_INTERPRETATION_LAB", "lab"},
 			{VIPS_INTERPRETATION_CMYK, "VIPS_INTERPRETATION_CMYK", "cmyk"},
@@ -434,6 +433,7 @@ vips_interpretation_get_type( void )
 			{VIPS_INTERPRETATION_LABS, "VIPS_INTERPRETATION_LABS", "labs"},
 			{VIPS_INTERPRETATION_sRGB, "VIPS_INTERPRETATION_sRGB", "srgb"},
 			{VIPS_INTERPRETATION_YXY, "VIPS_INTERPRETATION_YXY", "yxy"},
+			{VIPS_INTERPRETATION_FOURIER, "VIPS_INTERPRETATION_FOURIER", "fourier"},
 			{VIPS_INTERPRETATION_RGB16, "VIPS_INTERPRETATION_RGB16", "rgb16"},
 			{VIPS_INTERPRETATION_GREY16, "VIPS_INTERPRETATION_GREY16", "grey16"},
 			{VIPS_INTERPRETATION_ARRAY, "VIPS_INTERPRETATION_ARRAY", "array"},
diff --git a/libvipsCC/VDisplay.cc b/libvipsCC/VDisplay.cc
index 1ab30ba0..f2f4d468 100644
--- a/libvipsCC/VDisplay.cc
+++ b/libvipsCC/VDisplay.cc
@@ -52,28 +52,13 @@ VIPS_NAMESPACE_START
 static void
 free_display( im_col_display *d )
 {
-	if( d->d_name )
-		im_free( d->d_name );
-	im_free( d );
 }
 
 // Dupe an im_col_display
 static im_col_display *
 dup_display( im_col_display *in ) throw( VError )
 {
-	im_col_display *out;
-
-	if( !(out = IM_NEW( NULL, im_col_display )) )
-		verror();
-
-	*out = *in;
-	if( in->d_name )
-		if( !(out->d_name = strdup( in->d_name )) ) {
-			free_display( out );
-			verror( "out of memory" );
-		}
-
-	return( out );
+	return( in );
 }
 
 // Remove lut
@@ -109,9 +94,6 @@ void VDisplay::refblock::wready() throw( VError )
 // Check that luts are up-to-date
 void VDisplay::refblock::cluts() throw( VError )
 {
-	if( !luts )
-		if( !(luts = im_col_make_tables_RGB( NULL, disp )) )
-			verror();
 }
 
 VDisplay::~VDisplay()
@@ -140,30 +122,9 @@ VDisplay &VDisplay::operator=( const VDisplay &a )
 
 VDisplay::VDisplay( const char *name ) throw( VError )
 {
-	// Search for a matching name in the VIPS colour list
-        im_col_display *scr = im_col_display_name( name );
- 
-	if( !scr ) {
-		VError err;
-
-		err.app( "VDisplay error: " );
-		err.app( "unknown display type \"" ).app( name ).app( "\"\n" );
-		err.app( "display should be one of:" );
-
-		for( int i = 0; (scr = im_col_displays( i )); i++ ) {
-			err.app( " \"" );
-			err.app( im_col_displays( i )->d_name );
-			err.app( "\"" );
-		}
-
-		err.app( "\n" );
-
-		throw( err );
-	}
-
 	// Install display
 	ref = new refblock;
-	ref->disp = scr;
+	ref->disp = NULL;
 }
 
 VDisplay::VDisplay()