Index: branches/RC/core/admin_templates/js/ajax.js
===================================================================
diff -u -N -r11576 -r11592
--- branches/RC/core/admin_templates/js/ajax.js	(.../ajax.js)	(revision 11576)
+++ branches/RC/core/admin_templates/js/ajax.js	(.../ajax.js)	(revision 11592)
@@ -132,7 +132,7 @@
 					position: 'absolute',
 					zIndex: 200,
 					opacity: 0.75,
-					backgroundColor: 'black',
+					backgroundColor: 'lightgray',
 
 					// don't show progress overlay, when target div is hidden
 					display: $content_offset.top /*$content_height*/ > 0 ? 'block' : 'none'