Examine source code of DigiMixer

{
  "theme": {
    "images": {
      "theme_frame": "Unbenannt.JPG"
    },
    "colors": {
      "frame": "#2a363b",
      "tab_background_text": "#afbfd1"
    }
  },
  "version": "2.0",
  "name": "DigiMixer",
  "manifest_version": 2,
  "description": "the Mix"
}