Fellies/config/environmental/core/components/panels/panels.json

{
  "ma:panel": {
    "ma:default_base_color": {
      "in:r:[0~255]": 255,
      "in:g:[0~255]": 255,
      "in:b:[0~255]": 255
    }
  },
  "ma:clear_panel": {
    "ma:default_base_color": {
      "in:r:[0~255]": 255,
      "in:g:[0~255]": 255,
      "in:b:[0~255]": 255
    }
  }
}