Examine source code of Joyful Spring

{
  "theme": {
    "images": {
      "theme_frame": "JoyfulSpringH.jpg"
    },
    "colors": {
      "frame": "#d9f3ff",
      "tab_background_text": "#000000"
    }
  },
  "version": "2.0",
  "name": "Joyful  Spring",
  "manifest_version": 2,
  "description": "blue, butterflies, diamonds, feathers, flowers, jewels, lace, ribbon, spring, summer, My wallpaper to match is at: <a href=\"https://outgoing.prod.mozaws.net/v1/6519c4d128de12e764919d0cc31652a2c3db9f6a6d511a45fec6507e4bbdc59e/http%3A//nature.desktopnexus.com/wallpaper/997501/\" rel=\"nofollow\">http://nature.desktopnexus.com/wallpaper/997501/</a>"
}