Examine source code of Dropping Color

{
  "theme": {
    "images": {
      "theme_frame": "DroppingColorHcopyCustom.jpg"
    },
    "colors": {
      "frame": "#333333",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "Dropping Color",
  "manifest_version": 2,
  "description": "leaves beginning to change color and falling into stream. forest, river, stream, creek, autumn, fall, green, woods, My wallpaper to match can be found at: <a href=\"https://outgoing.prod.mozaws.net/v1/d21d81e60609af633a9f1c971e786ee35c0b71620ccc4d3e19f43c441d585da5/http%3A//nature.desktopnexus.com/wallpaper/745720/\" rel=\"nofollow\">http://nature.desktopnexus.com/wallpaper/745720/</a>"
}