Examine source code of Alien corridor

{
  "theme": {
    "images": {
      "theme_frame": "hardware.jpg"
    },
    "colors": {
      "frame": "#fffcfc",
      "tab_background_text": "#d47f7f"
    }
  },
  "version": "2.0",
  "name": "Alien corridor",
  "manifest_version": 2,
  "description": "3d alien hallway\nView full image \n<a href=\"https://outgoing.prod.mozaws.net/v1/c95918cd38ce6cb98e08818ad5f8d467f1b6a5bdb856fcdbdfb1eeb676123a4d/http%3A//akirasanbeer.deviantart.com/gallery/%3Foffset=48%23/d22ziwp\" rel=\"nofollow\">http://akirasanbeer.deviantart.com/gallery/?offset=48#/d22ziwp</a>"
}