Examine source code of Autocross

{
  "theme": {
    "images": {
      "theme_frame": "autoXheader.png"
    },
    "colors": {
      "frame": "#000000",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "Autocross",
  "manifest_version": 2,
  "description": "This Theme is about Autocross.\nOne of the famoust off-road motorsport in Germany, right after Rallye-Cross. Hope to feed your hunger for offroad action. Learn more about the sport on this non-business community: <a href=\"https://outgoing.prod.mozaws.net/v1/e381cb99a2b804020ca382643ef41c01375af902a715107088955cadf4de96fb/http%3A//www.cross-forum.eu\" rel=\"nofollow\">www.cross-forum.eu</a>"
}