<bindings xmlns="http://www.mozilla.org/xbl">
  <binding id="red">
    <content>
      <children/>
      <!-- gradient reference should fail, fill should fall back to black -->
      <rect xmlns="http://www.w3.org/2000/svg"
            width="100%" height="100%" fill="url(#grad)"/>
    </content>
  </binding>
</bindings>
