Examine source code of Dutch Lions

{
  "theme": {
    "images": {
      "theme_frame": "DutchLions.jpg"
    },
    "colors": {
      "frame": "#f51e0e",
      "tab_background_text": "#080808"
    }
  },
  "version": "2.0",
  "name": "Dutch Lions",
  "manifest_version": 2,
  "description": "Dutch Lions \nSupport all kind of sports!"
}