---
root:
  items:
    - type: rect
      bounds: 50 50 2000 300
      color: blue

    - type: conic-gradient
      bounds: 50 50 2000 300
      center: 150 150
      angle: 0.0
      stops: [0.0, red,
              0.125, blue,
              0.375, blue,
              0.5, yellow,
              1.0, red]