Examine source code of Fade to Fall

{
  "theme": {
    "images": {
      "theme_frame": "FadetoFallHCustom.jpg"
    },
    "colors": {
      "frame": "#ff9900",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "Fade to Fall",
  "manifest_version": 2,
  "description": "sunflowers, trees, autumn, fall, butterfly, butterflies, gold, yellow, orange, brown, rust, nature, sunny, sun, morning, My wallpaper to match can be found at: <a href=\"https://outgoing.prod.mozaws.net/v1/66b02fbaff957ffe2db14204e07afbf7ce136ae41ac116b6d888ca528cf66b26/http%3A//nature.desktopnexus.com/wallpaper/824399/\" rel=\"nofollow\">http://nature.desktopnexus.com/wallpaper/824399/</a>"
}