Examine source code of Winter Mouse

{
  "theme": {
    "images": {
      "theme_frame": "wintermouseHCustom.jpg"
    },
    "colors": {
      "frame": "#d1ed9c",
      "tab_background_text": "#000000"
    }
  },
  "version": "2.0",
  "name": "Winter Mouse",
  "manifest_version": 2,
  "description": "stars, mice, branch, mouse, whimsical, moss, berries, nature, abstract, limb\t\n\nDesigned by MaDonna\n\nMy wallpaper to match is at: <a href=\"https://outgoing.prod.mozaws.net/v1/968cdae34fc4f6c769208741b760104a35e7fc263ee4109e2887daa8e4a449ed/http%3A//nature.desktopnexus.com/wallpaper/1302654/\" rel=\"nofollow\">http://nature.desktopnexus.com/wallpaper/1302654/</a>"
}