Examine source code of Nocturne

{
  "theme": {
    "images": {
      "theme_frame": "Nocheader.jpg"
    },
    "colors": {
      "frame": "rgba(229,230,232,1)",
      "tab_background_text": "#000000"
    }
  },
  "version": "2.0",
  "name": "Nocturne",
  "manifest_version": 2,
  "description": "Firefox Persona version of my “Nocturne” 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/a400f26e47425e547e606bdeac46a9cafd2d5f13569b80d5482e9fc4c23ea69b/http%3A//digitalblasphemy.com/preview.shtml%3Fi=nocturne\" rel=\"nofollow\">http://digitalblasphemy.com/preview.shtml?i=nocturne</a>"
}