Diagnostics UI: more UI implementation.

chrome/browser/resources/chromeos/diagnostics/main.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.
  */
 
 body {
   font-family: 'Chrome Droid Sans', 'Droid Sans Fallback', sans-serif;
   font-size: 75%;
   padding: 0;
 }
@@ skipping 34 matching lines @@
 
 .page header > h1 {
   margin: 0;
   padding: 21px 0 13px;
 }
 
 /* Create a border under the h1 (but before anything that gets appended
  * to the end of the header, such as the managed prefs banner). */
 .page header > h1::after {
   -webkit-margin-end: 20px;
-  background-color: #eee;
+  background-color: rgb(238, 238, 238);
   content: '';
   display: block;
   height: 1px;
   position: relative;
   top: 13px;
 }
+
+.page div {
+  line-height: 29px;
+}
+
+.test-performed {
+  color: rgb(70, 78, 90);
+}
+
+.test-pending {
+  color: rgb(153, 153, 153);
+}
+
+.test-error {
+  color: rgb(206, 57, 38);
+}
+
+.recommendation {
+  background: -webkit-gradient(linear, left top, left bottom,
+                               from(rgb(171, 253, 182)),
+                               to(rgb(94, 191, 107)));
+  border: 1px solid rgb(17, 102, 27);
+  padding: 2px;
+  width: 320px;
+}