Examine source code of Fireworks at night

{
  "theme": {
    "images": {
      "theme_frame": "Fireworks.jpg"
    },
    "colors": {
      "frame": "#000000",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "Fireworks at night",
  "manifest_version": 2,
  "description": "Provided by WafariWallpapers.\n\n<a href=\"https://outgoing.prod.mozaws.net/v1/19b2c574e56688c6d99fbc481534cf1b8c1f099a6c19a7ae94be964af7ff7829/http%3A//www.wafaripictures.freehostingcloud.com/\" rel=\"nofollow\">http://www.wafaripictures.freehostingcloud.com/</a>"
}