diff --git a/xpfe/components/prefwindow/resources/content/pref-search.xul b/xpfe/components/prefwindow/resources/content/pref-search.xul
index 3d8fb0c89612..88c15be2e0a2 100755
--- a/xpfe/components/prefwindow/resources/content/pref-search.xul
+++ b/xpfe/components/prefwindow/resources/content/pref-search.xul
@@ -25,7 +25,7 @@
 
 <!DOCTYPE window SYSTEM "chrome://communicator/locale/pref/pref-search.dtd" >
 <window debug="false" xmlns:html="http://www.w3.org/TR/REC-html40"
-        class="dialog"
+        class="color-dialog"
         xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul"
         onload="parent.initPanel('chrome://communicator/content/pref/pref-search.xul');"  title="&title.label;"
 	      orient="vertical">