{
  "of": {
    "loading-indicator": {
      "bg-color": {"value": "{of.color.secondary}"},
      "fg-color": {"value": "{of.color.primary}"},
      "size": {"value": "20px"},
      "thickness": {"value": "6px"},
      "muted": {
        "bg-color": {"value": "{utrecht.button.disabled.color}"},
        "fg-color": {"value": "{utrecht.button.disabled.background-color}"}
      },
      "small": {
        "size": {"value": "15px"},
        "thickness": {"value": "4px"}
      }
    }
  }
}