Index: /CKEditor/branches/versions/3.6.x/_source/plugins/docprops/dialogs/docprops.js
===================================================================
--- /CKEditor/branches/versions/3.6.x/_source/plugins/docprops/dialogs/docprops.js	(revision 6862)
+++ /CKEditor/branches/versions/3.6.x/_source/plugins/docprops/dialogs/docprops.js	(revision 6863)
@@ -441,7 +441,7 @@
 											this.setValue( body.getComputedStyle( 'color' ) );
 										},
-										commit : function( doc, html, head, body )
-										{
-											if ( this.isChanged() )
+										commit : function( doc, html, head, body, isPreview )
+										{
+											if ( this.isChanged() || isPreview )
 											{
 												body.removeAttribute( 'text' );
@@ -460,7 +460,7 @@
 											this.setValue( val == 'transparent' ? '' : val );
 										},
-										commit : function( doc, html, head, body )
-										{
-											if ( this.isChanged() )
+										commit : function( doc, html, head, body, isPreview )
+										{
+											if ( this.isChanged() || isPreview )
 											{
 												body.removeAttribute( 'bgcolor' );