color {
  bounds: 0 0 50 50;
  color: rgb(0,0,0);
}
clip {
  clip: 10 10 30 30;
  child: transform {
    transform: translate(10, 10);
    child: opacity {
      opacity: 0.8;
      child: color {
        bounds: -50 -50 100 100;
        color: rgb(255,0,0);
      }
    }
  }
}