Examine source code of misty fall

{
  "theme": {
    "images": {
      "theme_frame": "header.png"
    },
    "colors": {
      "frame": "#d1d4e3",
      "tab_background_text": "#804e04"
    }
  },
  "version": "2.0",
  "name": "misty fall",
  "manifest_version": 2,
  "description": "original picture: a place in the clouds by Adam Baker - link: <a rel=\"nofollow\" href=\"https://outgoing.prod.mozaws.net/v1/6656ec45c34c6fb85dec46c4f11643b43213f12dd8cd0af8781662a2b5c90ba8/http%3A//www.flickr.com/photos/ilektrik/7521693330/in/photostream/\">www.flickr.com/photos/ilektrik/7521693330/in/photostream/</a>"
}