Index: themes.css
===================================================================
--- themes.css	(revision 40958)
+++ themes.css	(working copy)
@@ -370,7 +370,7 @@
 	bottom: 0;
 	background: #f1f1f1;
 	background: rgba( 238, 238, 238, 0.9 );
-	z-index: 10000; /* Over WP Pointers. */
+	z-index: 999; /* Over WP Pointers. */
 }
 
 .theme-overlay .theme-header {