Examine source code of Gortalon

{
  "theme": {
    "images": {
      "theme_frame": "logo.png.jpeg"
    },
    "colors": {
      "frame": "#693600",
      "tab_background_text": "#000000"
    }
  },
  "version": "2.0",
  "name": "Gortalon",
  "manifest_version": 2,
  "description": "Gortalon 2D MMORPG <a rel=\"nofollow\" href=\"https://outgoing.prod.mozaws.net/v1/109a11ae6227de107ae79308fd5ace0ede91adb84eb9ad321742e0375466de2c/http%3A//www.nailes.pl/gortalon/\">http://www.nailes.pl/gortalon/</a>"
}