Examine source code of Bieber Fever..

{
  "theme": {
    "images": {
      "theme_frame": "BeiberFeverH3.jpg"
    },
    "colors": {
      "frame": "#f2eaea",
      "tab_background_text": "#000000"
    }
  },
  "version": "2.0",
  "name": "Bieber Fever..",
  "manifest_version": 2,
  "description": "actor, Canadian, concerts, music, musician, singer, songwriter, teen idol, hair, boy, young, teeny bopper, \n\nDesigned by MaDonna\n\nMy wallpaper to match is at: <a href=\"https://outgoing.prod.mozaws.net/v1/4a8c8b0e129ff5f4a7cb4819cc0ad004a8f64a20ffac547a14e1c25dc69f7f5e/http%3A//people.desktopnexus.com/wallpaper/1140787/\" rel=\"nofollow\">http://people.desktopnexus.com/wallpaper/1140787/</a>"
}