Examine source code of Mediagol

{
  "theme": {
    "images": {
      "theme_frame": "header2.jpg"
    },
    "colors": {
      "frame": "#ffffff",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "Mediagol",
  "manifest_version": 2,
  "description": "Red skin for firefox signed by <a href=\"https://outgoing.prod.mozaws.net/v1/51fb33142e7518828a9ebe47f266034acf627f4de6b9140c02a2eb6de0234b57/http%3A//Mediagol.it\" rel=\"nofollow\">Mediagol.it</a> the most important website about Palermo's Football team"
}