DevTools: beautified styles sidebar toolbar.

third_party/WebKit/Source/devtools/front_end/elements/elementsTreeOutline.css

 /*
  * Copyright (c) 2014 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.
  */
 
 .elements-disclosure {
     width: 100%;
     display: inline-block;
     line-height: normal;
 }
 
 .elements-disclosure li {
     /** Keep margin-left & padding-left in sync with ElementsTreeElements.updateDecorators **/
     padding: 0 0 0 14px;
     margin-top: 1px;
     margin-left: -2px;
     word-wrap: break-word;
     position: relative;
     min-height: 14px;
 }
 
 .elements-disclosure li.parent {
     /** Keep it in sync with ElementsTreeElements.updateDecorators **/
     margin-left: -13px;
 }
 
+.elements-disclosure li.selected:after {
+    font-style: italic;
+    content: " == $0";
+    color: #555;
+}
+
+.elements-disclosure ol:focus li.selected:after {
+    color: white;
+}
+
 .elements-disclosure li.parent::before {
     box-sizing: border-box;
 }
 
 .elements-disclosure li.parent::before {
     -webkit-user-select: none;
     -webkit-mask-image: url(Images/toolbarButtonGlyphs.png);
     -webkit-mask-size: 352px 168px;
     content: "aa";
     color: transparent;
@@ skipping 292 matching lines @@
     -webkit-mask-size: 352px 168px;
     background-color: white;
     cursor: pointer;
 }
 
 @media (-webkit-min-device-pixel-ratio: 1.5) {
 .elements-disclosure li.selected .gutter-container:not(.has-decorations) {
     -webkit-mask-image: url(Images/toolbarButtonGlyphs_2x.png);
 }
 } /* media */