Examine source code of Bungie.net

{
  "theme": {
    "images": {
      "theme_frame": "Tester1-5.jpg"
    },
    "colors": {
      "frame": "#ffffff",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "Bungie.net",
  "manifest_version": 2,
  "description": "A very basic theme based on the design of <a href=\"https://outgoing.prod.mozaws.net/v1/c4f2aa14769c534df82b61bbfffc1de6abe1f51422a7ed13276da0739c228c4a/http%3A//Bungie.net\" rel=\"nofollow\">Bungie.net</a>."
}