Examine source code of Spring Farming

{
  "theme": {
    "images": {
      "theme_frame": "SpringFarmingHCustom.jpg"
    },
    "colors": {
      "frame": "#93bf96",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "Spring Farming",
  "manifest_version": 2,
  "description": "apple blossoms, bovine, buttercups, cattle, cherry blossoms, clouds, cows, ducks, farm, field, grass, parture, Sakura, sky, sunrise, sunset, twilight, \n\nDesigned by MaDonna\n\nMy wallpaper to match is at: <a href=\"https://outgoing.prod.mozaws.net/v1/eed2fa705a5bfa4534b226513414bbc3d5bef4bd109f8b06cfd749f6844de9df/http%3A//nature.desktopnexus.com/wallpaper/1048085/\" rel=\"nofollow\">http://nature.desktopnexus.com/wallpaper/1048085/</a>"
}