---
root:
  items:
    - type: stacking-context
      bounds: [0, 0, 1024, 1024]
      items:
        - type: rect
          bounds: [150, 0, 150, 600]
          color: [191, 127,  63]
        - type: rect
          bounds: [300, 0, 150, 600]
          color: [127, 191, 63]