Examine source code of Xenotron

{
  "theme": {
    "images": {
      "theme_frame": "hdxeno.jpg"
    },
    "colors": {
      "frame": "rgba(229,230,232,1)",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "Xenotron",
  "manifest_version": 2,
  "description": "Firefox Persona version of my “Xenotron” wallpaper. 3D artwork by Ryan Bliss. Persona Designed by Mark Hamilton for Digital Blasphemy. Wallpaper available at <a href=\"https://outgoing.prod.mozaws.net/v1/5a6db5e8f52f415cc1d7a291846a432380b4fe46eca8c089f20689fc43f4bacd/http%3A//digitalblasphemy.com/preview.shtml%3Fi=xenotron\" rel=\"nofollow\">http://digitalblasphemy.com/preview.shtml?i=xenotron</a>"
}