Examine source code of Kitty sleeps

{
  "theme": {
    "images": {
      "theme_frame": "005_top.jpg"
    },
    "colors": {
      "frame": "#ffffff",
      "tab_background_text": "#bfe3c2"
    }
  },
  "version": "2.0",
  "name": "Kitty sleeps",
  "manifest_version": 2,
  "description": "Red kitty sleeping. \n\nFrom my picture: <a href=\"https://outgoing.prod.mozaws.net/v1/f147ecb9640c25fd9f02f053621e7d8128beb0686e53ab30e3432967c8b605ef/http%3A//www.flickr.com/photos/zamm/78019225/in/set-1637281/\" rel=\"nofollow\">http://www.flickr.com/photos/zamm/78019225/in/set-1637281/</a>"
}