Examine source code of Deep Blue Fox

{
  "theme": {
    "images": {
      "theme_frame": "DBFttt.jpeg"
    },
    "colors": {
      "frame": "#f7f8fa",
      "tab_background_text": "#fafafa"
    }
  },
  "version": "2.0",
  "name": "Deep Blue Fox",
  "manifest_version": 2,
  "description": "Matches a wallpaper found at <a href=\"https://outgoing.prod.mozaws.net/v1/f87cff6fd919cf314abac0627056685aafc75eb521e57e811d02cb58760898df/http%3A//desktopnexus.com\" rel=\"nofollow\">desktopnexus.com</a>."
}