Examine source code of HD-ARENA.COM

{
  "theme": {
    "images": {
      "theme_frame": "test.jpg"
    },
    "colors": {
      "frame": "#ffffff",
      "tab_background_text": "#000000"
    }
  },
  "version": "2.0",
  "name": "HD-ARENA.COM",
  "manifest_version": 2,
  "description": "<a href=\"https://outgoing.prod.mozaws.net/v1/5848ab4b21ee4cf76d911c5b5e97a9eec4efa29f43b0b9572e4dd031ecebea23/http%3A//HD-ARENA.COM\" rel=\"nofollow\">HD-ARENA.COM</a> OFFICIAL PERSONA"
}