color {
  bounds: 0 0 15 15;
  color: rgb(0,0,0);
}
transform {
  transform: translate(2, 2.6);
  child: fill {
    child: linear-gradient {
      bounds: -1 -1 12 12;
      start: -1 0;
      end: 11 0;
      stops: 0.5 rgb(0,80,0), 0.5 rgb(80,0,0);
    }
    path: "\
M 0 0\
L 10 0\
L 10 10\
L 0 10\
Z\
M 1 1\
L 1 9\
L 9 9\
L 9 1\
Z";
    fill-rule: winding;
  }
}