pixel-art-tutor.thomasjvu.com

{
  "type": "object",
  "properties": {
    "from": {
      "description": "Color to replace.",
      "anyOf": [
        {
          "type": "number"
        },
        {
          "type": "string"
        },
        {
          "type": "null"
        }
      ]
    },
    "to": {
      "description": "Replacement color ('transparent'/null erases).",
      "anyOf": [
        {
          "type": "number"
        },
        {
          "type": "string"
        },
        {
          "type": "null"
        }
      ]
    },
    "spriteId": {
      "type": "string",
      "description": "Scope to one sprite; omit for all sprites."
    },
    "layerId": {
      "type": "string",
      "description": "Scope to one layer; omit for all layers."
    }
  },
  "required": [
    "from",
    "to"
  ]
}