Examine source code of Sky Is Falling

{
  "theme": {
    "images": {
      "theme_frame": "Header.jpg"
    },
    "colors": {
      "frame": "#000000",
      "tab_background_text": "#fcfcfc"
    }
  },
  "version": "2.0",
  "name": "Sky Is Falling",
  "manifest_version": 2,
  "description": "Matching Wallpaper <a href=\"https://outgoing.prod.mozaws.net/v1/2643acc49467cada226890b542c94509903d84b42b3e60950aeee12917f30a4e/http%3A//sinine88.deviantart.com/art/Sky-Is-Falling-2-183411693\" rel=\"nofollow\">http://sinine88.deviantart.com/art/Sky-Is-Falling-2-183411693</a>"
}