diff --git a/wp-admin/css/colors-classic.css b/wp-admin/css/colors-classic.css
index a23cb68278..7661a0d7ee 100644
--- a/wp-admin/css/colors-classic.css
+++ b/wp-admin/css/colors-classic.css
@@ -414,7 +414,7 @@ div#media-upload-header, div#plugin-information-header {
 	background-color: #f9f9f9;
 }
 
-input.readonly {
+input.readonly, textarea.readonly {
 	background-color: #ddd;
 }
 
diff --git a/wp-admin/css/colors-fresh.css b/wp-admin/css/colors-fresh.css
index c34e209651..9c1693ca3d 100644
--- a/wp-admin/css/colors-fresh.css
+++ b/wp-admin/css/colors-fresh.css
@@ -451,7 +451,7 @@ div#plugin-information-header {
 	background-color: #f9f9f9;
 }
 
-input.readonly {
+input.readonly, textarea.readonly {
 	background-color: #ddd;
 }