Examine source code of Enshrouded

{
  "theme": {
    "images": {
      "theme_frame": "hdenshrouded.jpg"
    },
    "colors": {
      "frame": "#b4bbd1",
      "tab_background_text": "#000000"
    }
  },
  "version": "2.0",
  "name": "Enshrouded",
  "manifest_version": 2,
  "description": "Firefox Persona version of my “Enshrouded” wallpaper. 3D artwork by Ryan Bliss. Persona Designed by Mark Hamilton for Digital Blasphemy. Wallpaper available at <a href=\"https://outgoing.prod.mozaws.net/v1/0c29ed50e6391a1cdc5bc8ba728962b962200c39a04e7f4236147f93560d4dd0/http%3A//digitalblasphemy.com/preview.shtml%3Fi=enshrouded2\" rel=\"nofollow\">http://digitalblasphemy.com/preview.shtml?i=enshrouded2</a>"
}