Examine source code of Letter to Me

{
  "theme": {
    "images": {
      "theme_frame": "LettertoMeH.jpg"
    },
    "colors": {
      "frame": "#030303",
      "tab_background_text": "#080707"
    }
  },
  "version": "2.0",
  "name": "Letter to Me",
  "manifest_version": 2,
  "description": "flowers, envelopes, Love, vintage, My wallpaper that matches can be found at: <a href=\"https://outgoing.prod.mozaws.net/v1/53818fef6bd7a87533d8ac652e2eb5fb5a2e579bbb965f0de94d4ad2f1081e2e/http%3A//nature.desktopnexus.com/wallpaper/660493/\" rel=\"nofollow\">http://nature.desktopnexus.com/wallpaper/660493/</a>"
}