Examine source code of Wheat Fields

{
  "theme": {
    "images": {
      "theme_frame": "Header.jpg"
    },
    "colors": {
      "frame": "#1a1a1a",
      "tab_background_text": "#cccccc"
    }
  },
  "version": "2.0",
  "name": "Wheat Fields",
  "manifest_version": 2,
  "description": "Matching Wallpaper <a href=\"https://outgoing.prod.mozaws.net/v1/28f33f0453e05c70a0c1e482e8b4508c0c01ab6a04e81596903fce6ba328fcd4/http%3A//sinine88.deviantart.com/art/Wheat-261127254\" rel=\"nofollow\">http://sinine88.deviantart.com/art/Wheat-261127254</a>"
}