Changed the highlight color to be a less abrasive yellow as per

appengine/swarming/ui/res/imp/taskpage/task-page.html

 <!--
   Copyright 2016 The LUCI Authors. All rights reserved.
   Use of this source code is governed under the Apache License, Version 2.0
   that can be found in the LICENSE file.
 
   This in an HTML Import-able file that contains the definition
   of the following elements:
 
     <task-page>
 
@@ skipping 955 matching lines @@
         return result && result.cipd_pins && result.cipd_pins.packages;
       },
 
       _highlight: function(request, key) {
         var highlight = false;
         request.forEach(function (dim) {
           if (dim.key == key) {
             highlight = true;
           }
         });
-        return highlight ? "Yellow" : "White";
+        return highlight ? "LightYellow" : "White";
       },
 
       _internalClass: function(failure) {
         if (failure) {
           return "exception";
         }
         return "";
       },
 
       _isolateLink: function(ref) {
@@ skipping 185 matching lines @@
 
         this._getJsonAsync("_other_running", "/api/swarming/v1/tasks/count", "_busyRunningCount", this._auth_headers, taskCountParams);
         // change running to pending
         taskCountParams.state = ["PENDING"];
         this._getJsonAsync("_other_pending", "/api/swarming/v1/tasks/count", "_busyPendingCount", this._auth_headers, taskCountParams);
       }
     });
   })();
   </script>
 </dom-module>