Examine source code of Mundo Virtual

{
  "theme": {
    "images": {
      "theme_frame": "GFRAD.jpg"
    },
    "colors": {
      "frame": "#030303",
      "tab_background_text": "#271bdb"
    }
  },
  "version": "2.0",
  "name": "Mundo Virtual",
  "manifest_version": 2,
  "description": "<a href=\"https://outgoing.prod.mozaws.net/v1/fb5b1a4a6845067b051b9eac8a4b8b511fd809012b822b6f48bedd380bbd459a/http%3A//www.orkut.com.br/Main%23Community%3Fcmm=91097247\" rel=\"nofollow\">http://www.orkut.com.br/Main#Community?cmm=91097247</a>"
}