milo: fix running steps

appengine/cmd/milo/frontend/static/buildbot/css/default.css

 /* Copyright 2015 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.
  */
 
 body.interface {
   margin-left: 30px;
   margin-right: 30px;
   margin-top: 20px;
   margin-bottom: 50px;
@@ skipping 448 matching lines @@
   background-color: #c6c;
   border-color: #ACA0B3;
 }
 
 .start {
   color: #000;
   background-color: #ccc;
   border-color: #ccc;
 }
 
-.running,.waiting,td.building {
+.running, .waiting, td.building, .status-Running {
   color: #000;
   background-color: #fd3;
   border-color: #C5C56D;
 }
 
 .paused {
   color: #FFFFFF;
   background-color: #8080FF;
   border-color: #dddddd;
 }
@@ skipping 212 matching lines @@
 }
 
 form.command_forcebuild .force-nested > .label {
   font-weight: bold;
   display: list-item;
 }
 
 form.command_forcebuild .force-any .force-text {
   display: inline;
 }