Examine source code of Time for Summer

{
  "theme": {
    "images": {
      "theme_frame": "TimeforSummerH3.jpg"
    },
    "colors": {
      "frame": "#000000",
      "tab_background_text": "#080808"
    }
  },
  "version": "2.0",
  "name": "Time for Summer",
  "manifest_version": 2,
  "description": "clock, butterfly, roses, carnations, hearts, summer, spring, nature, pink, peach, leaves, My wallpaper that matches can be found at: <a href=\"https://outgoing.prod.mozaws.net/v1/982ba4a3900a35cbee9a021e1dc4f862879c4cd8bb1801da70947a8810f445d3/http%3A//nature.desktopnexus.com/wallpaper/632489/\" rel=\"nofollow\">http://nature.desktopnexus.com/wallpaper/632489/</a>"
}