---
root:
  items:
    - type: rect
      bounds: 0 0 800 450
      color: red
    - type: gradient
      bounds: 0 0 800 450
      start: 100 100
      end: 700 350
      stops: [ 0.0, [255, 255, 255, 1], 1.0, [0,0,0,1] ]