{
  "schema": {
    "definitions": {
      "Color": {
        "title": "Color",
        "type": "string",
        "anyOf": [
          { "type": "string", "enum": [ "#ff0000" ], "title": "Red" },
          { "type": "string", "enum": [ "#00ff00" ], "title": "Green" },
          { "type": "string", "enum": [ "#0000ff" ], "title": "Blue" }
        ]
      }
    },
    "title": "Image editor",
    "type": "object",
    "properties": {
      "currentColor": { "$ref": "#/definitions/Color", "title": "Brush color" },
      "colorMask": {
        "title": "Color mask",
        "type": "array",
        "items": { "$ref": "#/definitions/Color" },
        "uniqueItems": true
      },
      "colorPalette": {
        "title": "Color palette",
        "type": "array",
        "items": { "$ref": "#/definitions/Color" }
      },
      "blendMode": {
        "title": "Blend mode",
        "type": "string",
        "enum": [ "screen", "multiply", "overlay" ],
        "enumNames": [ "Screen", "Multiply", "Overlay" ]
      }
    },
    "required": [ "currentColor", "colorMask", "blendMode" ]
  },
  "uiSchema": {},
  "formData": {
    "currentColor": "#00ff00",
    "colorMask": [ "#0000ff" ],
    "colorPalette": [ "#ff0000" ],
    "blendMode": "screen"
  }
}