root:
  items:
    - type: stacking-context
      bounds: [0, 0, 400, 400]
      filters: [opacity(0.5)]
      items:
        - image: solid-color(0, 255, 0, 255, 40, 4097)
          bounds: 0 0 400 400
          stretch-size: 200 200
          tile-spacing: 0 0
