transform {
  transform: translate3d(0, 0, -10000);
  child: color {
    bounds: 0 0 50 50;
    color: rgb(255,0,0);
  }
}
transform {
  transform: translate3d(0, 0, -10001);
  child: color {
    bounds: 50 0 50 50;
    color: rgb(255,255,0);
  }
}
transform {
  transform: translate3d(0, 0, 10000);
  child: color {
    bounds: 0 50 50 50;
    color: rgb(0,255,0);
  }
}
transform {
  transform: translate3d(0, 0, 10001);
  child: color {
    bounds: 50 50 50 50;
    color: rgb(0,0,255);
  }
}