DevTools: ui polish for the audits2 panel.

third_party/WebKit/Source/devtools/front_end/ui/inspectorCommon.css

 /*
  * Copyright 2015 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.
  */
 
 * {
     /* This is required for correct sizing of flex items because we rely
      * on an old version of the flexbox spec.
      * Longer-term we should remove this, see crbug.com/473625 */
@@ skipping 379 matching lines @@
     background-image: unset !important;
     box-shadow: none !important;
     cursor: pointer;
 }
 
 button.material-button.default {
     color: white;
     background-color: #4285f4 !important;
 }
 
+button.material-button.default:disabled {
+    background-color: #ffffff !important;
+    color: gray;
+}
+
 button.material-button.default:not(:disabled):hover {
     background-color: hsla(217, 89%, 58%, 1) !important;
     color: white !important;
 }
 
 button.material-button:not(:disabled):hover {
     background-color: #eee !important;
     color: gray !important;
 }