my bad. green toolbars? who would ever want that?? ;)

xpfe/browser/src/xul.css

@@ -1,5 +1,5 @@
 toolbar {
-    background-color: green;
+    background-color: lightgray;
     border-bottom: solid darkGray 1px;
     border-top: solid white 1px;
     border-left: solid white 1px;