Examine source code of Spring Three

{
  "theme": {
    "images": {
      "theme_frame": "Spring4.jpg"
    },
    "colors": {
      "frame": "#ffffff",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "Spring Three",
  "manifest_version": 2,
  "description": "tulips, spring, pink, abstract, yellow, painted, My wallpaper to match is available at: <a href=\"https://outgoing.prod.mozaws.net/v1/25eb35ed37eb8e0b129c8f38f7eb8a49e8d6d2068e6f3c33380e0d885523c190/http%3A//nature.desktopnexus.com/wallpaper/617209/\" rel=\"nofollow\">http://nature.desktopnexus.com/wallpaper/617209/</a>"
}