Examine source code of Time for Summer

{
  "theme": {
    "images": {
      "theme_frame": "TimeforSummerH.jpg"
    },
    "colors": {
      "frame": "#f7f2f2",
      "tab_background_text": "#000000"
    }
  },
  "version": "2.0",
  "name": "Time for  Summer",
  "manifest_version": 2,
  "description": "Designed by MaDonna, abstract, bird, clock, floral, flowers, spring, summer, time, vine \n\nDesigned by MaDonna\n\nMy wallpaper to match is at: <a href=\"https://outgoing.prod.mozaws.net/v1/d0d1dcb17c2045001a89039c807821722eb743261a5511c43804aca2ccf46a3e/http%3A//nature.desktopnexus.com/wallpaper/1059828/\" rel=\"nofollow\">http://nature.desktopnexus.com/wallpaper/1059828/</a>"
}