Examine source code of Flugzeug

{
  "theme": {
    "images": {
      "theme_frame": "Air111.jpg"
    },
    "colors": {
      "frame": "#9e99c2",
      "tab_background_text": "#999dcf"
    }
  },
  "version": "2.0",
  "name": "Flugzeug",
  "manifest_version": 2,
  "description": "wir fliegen..."
}