Examine source code of Twilight Wolf

{
  "theme": {
    "images": {
      "theme_frame": "headercopy.jpg"
    },
    "colors": {
      "frame": "#000000",
      "tab_background_text": "#000000"
    }
  },
  "version": "2.0",
  "name": "Twilight Wolf",
  "manifest_version": 2,
  "description": "Help save our wildlife, protect the Gray Wolf. <a rel=\"nofollow\" href=\"https://outgoing.prod.mozaws.net/v1/0ea58f80d86c69e104731af8a3e8514f343b61dcc2127e8ede827eeb46f8b111/http%3A//www.wwf.org/\">http://www.wwf.org/</a>"
}