Fix a bunch of UI nits in sheriff-o-matic.

Tools/GardeningServer/ui/ct-failure-card.html

 <!--
 Copyright 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.
 -->
 
 <link rel="import" href="ct-builder-grid.html">
 <link rel="import" href="ct-commit-list.html">
 <link rel="import" href="ct-test-list.html">
 
 <polymer-element name="ct-failure-card" attributes="failures">
   <template>
     <style>
       :host {
         display: flex;
       }
 
+      /* FIXME: All this paper-button styling should go in a cr-button component so that
+         we can use buttons in different places and have them all look the same. */
       paper-button {
-        background: papayawhip;
+        -webkit-user-select: none;
+        background: #f5f5f5;
+        border-radius: 2px;
+        border: 1px solid #dcdcdc;
+        color: #444;
+        padding: 0 16px;
+        text-align: center;
+      }
+
+      paper-button:focus {
+        border: 1px solid #4d90fe;
+        outline: none;
+      }
+
+      paper-button:active {
+        box-shadow: inset 0 1px 2px rgba(0, 0, 0, 0.3);
+      }
+
+      paper-button:active, paper-button:hover {
+        background: #f8f8f8;
+        border-color: #c6c6c6;
+        box-shadow: 0px 1px 1px rgba(0, 0, 0, 0.1);
+        color: #222;
       }
 
       ct-builder-grid {
         margin-right: 10px;
       }
+
+      .failure {
+        flex: 1;
+      }
+
+      #examine {
+        align-self: flex-start;
+      }
     </style>
     <ct-builder-grid failures="{{failures}}"></ct-builder-grid>
-    <div style="flex: 1">
+    <div class="failure">
       <ct-test-list tests="{{failures|testNames}}"></ct-test-list>
       <ct-commit-list first="{{failures[0].newestPassingRevision + 1}}"
                       last="{{failures[0].oldestFailingRevision}}"></ct-commit-list>
     </div>
-    <div>
-      <paper-button id="examine" on-tap="{{examine}}">Examine</paper-button>
-    </div>
+    <paper-button id="examine" on-tap="{{examine}}">Examine</paper-button>
   </template>
   <script>
     Polymer({
       failures: [],
 
       testNames: function(failures) {
         return failures.map(function(failureAnalysis) { return failureAnalysis.testName });
       },
 
       examine: function() {
         this.fire('ct-examine-failures', this.failures);
       },
     });
   </script>
 </polymer-element>