Examine source code of Shuddermusic.com

{
  "theme": {
    "images": {
      "theme_frame": "ShudderFirefoxHeader.png"
    },
    "colors": {
      "frame": "#474747",
      "tab_background_text": "#f2f2f2"
    }
  },
  "version": "2.0",
  "name": "Shuddermusic.com",
  "manifest_version": 2,
  "description": "Shudder's latest album, Generation Why, is now available for free download at <a href=\"https://outgoing.prod.mozaws.net/v1/63f098718edc9ceecb08e2aa88e07ee87adfd1828103224799b62f06aaebe8f7/http%3A//Shuddermusic.com\" rel=\"nofollow\">Shuddermusic.com</a>!"
}