Examine source code of rappers.in

{
  "theme": {
    "images": {
      "theme_frame": "ff_rin_header.jpg"
    },
    "colors": {
      "frame": "#524f4e",
      "tab_background_text": "#d6d6d6"
    }
  },
  "version": "2.0",
  "name": "rappers.in",
  "manifest_version": 2,
  "description": "Persona for <a rel=\"nofollow\" href=\"https://outgoing.prod.mozaws.net/v1/9211840b8827fdfef650042f8f5a0ae481e15b00bb6341e22355803d56b4a46d/http%3A//rappers.in\">rappers.in</a> users (<a rel=\"nofollow\" href=\"https://outgoing.prod.mozaws.net/v1/5f7cad2d9ab5d3b8cde1b313022c17397dd82359851d85a1b583dfb552840dcd/http%3A//www.rappers.in\">http://www.rappers.in</a>)"
}