chrome/browser/resources/net_internals/tab_switcher_view.css

/* Copyright (c) 2012 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.
 */

.tab-switcher-view {
  border-right: 1px solid #aaa;
  display: inline-block;
}

.tab-switcher-view {
  background: #eee;
  overflow-x: hidden;
  overflow-y: auto;
}

.tab-switcher-view a {
  display: block;
  margin-top: 0.15em;
  padding: 0.25em 0.5em 0.25em 0.5em;
  text-decoration: none;
}

.tab-switcher-view a:hover,
.tab-switcher-view .selected {
  background: white;
}

.tab-switcher-view a:visited,
.tab-switcher-view a  {
  color: black;
}

.tab-switcher-view a.selected {
  color: rgb(221, 75, 57);
}