Examine source code of chaussette-socks

{
  "theme": {
    "images": {
      "theme_frame": "coolsocks1.jpg"
    },
    "colors": {
      "frame": "rgba(229,230,232,1)",
      "tab_background_text": "#f7f2f2"
    }
  },
  "version": "2.0",
  "name": "chaussette-socks",
  "manifest_version": 2,
  "description": "Theme pour le site <a href=\"https://outgoing.prod.mozaws.net/v1/ed196d408c78bef8c8431289b94382ce50efaab45b948eea6c580a6d8fd20d98/http%3A//coolsocks.fr\" rel=\"nofollow\">coolsocks.fr</a>"
}