Examine source code of Annoying Orange

{
  "theme": {
    "images": {
      "theme_frame": "head_annyorng.png"
    },
    "colors": {
      "frame": "#ffffff",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "Annoying Orange",
  "manifest_version": 2,
  "description": "Annoying Orange fans!\n<a href=\"https://outgoing.prod.mozaws.net/v1/bc75287140a0352908caf18f4734b02f4efa5bee2f762c9a1a67b566908cb3af/http%3A//www.annoyingorange.com\" rel=\"nofollow\">http://www.annoyingorange.com</a>"
}