Examine source code of Zombie Menace

{
  "theme": {
    "images": {
      "theme_frame": "fire-fox.png"
    },
    "colors": {
      "frame": "#86869a",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "Zombie Menace",
  "manifest_version": 2,
  "description": "The official <a href=\"https://outgoing.prod.mozaws.net/v1/dcb6cd22ef30323e8ade5fba900d63966b69658af31d84e74dd3ea9417b50803/http%3A//ZombieMenace.com\" rel=\"nofollow\">ZombieMenace.com</a> firefox persona."
}