Examine source code of The Hunter

{
  "theme": {
    "images": {
      "theme_frame": "firefoxhunterhead.jpg"
    },
    "colors": {
      "frame": "#ffffff",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "The Hunter",
  "manifest_version": 2,
  "description": "Persona for the game, TheHunter.\n<a href=\"https://outgoing.prod.mozaws.net/v1/bc5ba1c77cafe0fa86d055ab1465c75ec949b93777439765d6e081bd402d8a22/http%3A//www.thehunter.com/pub/\" rel=\"nofollow\">http://www.thehunter.com/pub/</a>"
}