photocraft/docs/images/multi-channel-editing/levels-script.json

[
  [
    "engine.execute",
    {
      "command": "file.new",
      "params": {
        "width": 800,
        "height": 560,
        "depth": 16,
        "background": "white"
      }
    }
  ],
  [
    "engine.execute",
    {
      "command": "layer.new.layer",
      "params": {}
    }
  ],
  [
    "engine.execute",
    {
      "command": "paint.gradient",
      "params": {
        "from": [
          0,
          0
        ],
        "to": [
          800,
          560
        ],
        "colors": [
          "#143b9b",
          "#f6b552"
        ]
      }
    }
  ],
  [
    "engine.execute",
    {
      "command": "channel.target",
      "params": {
        "colors": [
          0,
          2
        ]
      }
    }
  ],
  [
    "ui.set",
    {
      "dockTabs": {
        "layers": 1
      },
      "fit": true
    }
  ],
  [
    "ui.menu.invoke",
    {
      "id": "image.adjustments.levels"
    }
  ]
]