Examine source code of Summer Treat

{
  "theme": {
    "images": {
      "theme_frame": "summertreatH.jpg"
    },
    "colors": {
      "frame": "#ffff84",
      "tab_background_text": "#040d6b"
    }
  },
  "version": "2.0",
  "name": "Summer  Treat",
  "manifest_version": 2,
  "description": "bird, blue berries, bow, orange flowers, orange, ribbon, spring, summer, yellow, bright, \n\nDesigned by MaDonna\n\nMy wallpaper to match is at: <a href=\"https://outgoing.prod.mozaws.net/v1/c913603454ab80935cfc0bf97cf6f19721f075339e05e53357ead00117c6ad54/http%3A//nature.desktopnexus.com/wallpaper/1049183/\" rel=\"nofollow\">http://nature.desktopnexus.com/wallpaper/1049183/</a>"
}