Examine source code of YEAphoto.pl

{
  "theme": {
    "images": {
      "theme_frame": "mozilla.jpg"
    },
    "colors": {
      "frame": "#000000",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "YEAphoto.pl",
  "manifest_version": 2,
  "description": "<a href=\"https://outgoing.prod.mozaws.net/v1/d49a7258c31cb097fdcddd5b1a7402e0f4980c7df463266a872c42980887c92a/http%3A//www.yeaphoto.pl\" rel=\"nofollow\">www.yeaphoto.pl</a>"
}