Examine source code of Labyrinth

{
  "theme": {
    "images": {
      "theme_frame": "t03up.jpg"
    },
    "colors": {
      "frame": "#f3bff5",
      "tab_background_text": "#f5c6b6"
    }
  },
  "version": "2.0",
  "name": "Labyrinth",
  "manifest_version": 2,
  "description": "An abstract image made by Tao Wei <a rel=\"nofollow\" href=\"https://outgoing.prod.mozaws.net/v1/919024ffe7e6f5ae20fc4e4eb592edaf3beb2369643c7cbd5cf256469260aa37/http%3A//hypnus.cgsociety.org/gallery/\">http://hypnus.cgsociety.org/gallery/</a>"
}