Fix i18n for the color enhancer extension

ui/accessibility/extensions/colorenhancer/res/setup.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. */
 
 /* main controls */
 
 th, td {
   text-align: center;
 }
 
@@ skipping 56 matching lines @@
   margin-right: 10px;
 }
 
 .swatch span {
   -webkit-transform: translate(-5px, -22px);
   font: 60pt sans;
   display: flex;
   height: 40px;
   line-height: 1em;
   width: 40px;
+  pointer-events: none;
 }
 
 #severity {
   margin-left: 50px;
   width: 200px;
 }
 
 #button-strip {
   display: flex;
   flex-direction: row;
@@ skipping 30 matching lines @@
   flex-direction: row;
   justify-content: flex-end;
   position: relative;
 }
 
 #setup-button-strip input:first-child {
   left: 0;
   position: absolute;
   top: 0;
 }