Examine source code of Graceful Butterfly

{
  "theme": {
    "images": {
      "theme_frame": "GracefulButterflyH.jpg"
    },
    "colors": {
      "frame": "#ffffff",
      "tab_background_text": "#2bb9d9"
    }
  },
  "version": "2.0",
  "name": "Graceful Butterfly",
  "manifest_version": 2,
  "description": "butterfly, art, flowers, paint, sky, summer, spring, pale, light, clouds, \n\nDesigned by MaDonna\n\nMy wallpaper to match can be found at: <a href=\"https://outgoing.prod.mozaws.net/v1/dd44bdd343656dfaacaf40e87a866c60aed9cfb8de3b508e6a8f73593b91e59f/http%3A//nature.desktopnexus.com/wallpaper/817116/\" rel=\"nofollow\">http://nature.desktopnexus.com/wallpaper/817116/</a>"
}