Examine source code of Blackbyte Advanced

{
  "theme": {
    "images": {
      "theme_frame": "blackbyte-advanced_header.jpg"
    },
    "colors": {
      "frame": "#676767",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "Blackbyte Advanced",
  "manifest_version": 2,
  "description": "Blackbyte Advanced theme for Firefox browsers.\n\nBased on our website: <a href=\"https://outgoing.prod.mozaws.net/v1/e234347be1ba04956df223f55a4f06891b8153548cbcb4abfd9520e455efe417/http%3A//www.blackbyte.fi\" rel=\"nofollow\">http://www.blackbyte.fi</a>"
}