Flesh out the content settings exceptions lists a bit more.

chrome/browser/resources/options/content_settings_page.css

+/*
+Copyright (c) 2010 The Chromium Authors. All rights reserved.
+Use of this source code is governed by a BSD-style license that can be
+found in the LICENSE file.
+*/
+
 #content-settings-nav-tabs .inactive-tab {
   background-color: #FFFFFF;
 }
 
 #content-settings-nav-tabs .active-tab {
   background-color: #DFDFDF;
   font-weight: bold;
 }
 
 .content-settings-tab-contents {
   display: none;
 }
 
 .active-tab-contents {
   display: block;
 }