/*
  The opacity node should affect both the shadow node child
  (the node that's NOT colored) and the actual shadow.
  I.e. the output should be entirely empty.
*/
opacity {
  opacity: 0;

  child: shadow {
    child: cross-fade {
      start: color {
        color: blue;
        bounds: 0 0 100 100;
      }
      end: color {
        color: red;
        bounds: 100 100 100 100;
      }
      progress: 0;
    }
    shadows: green 200 0 0;
  }
}