Examine source code of Audition x 1

{
  "theme": {
    "images": {
      "theme_frame": "1naglowek.jpg"
    },
    "colors": {
      "frame": "#590000",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "Audition x 1",
  "manifest_version": 2,
  "description": "<a href=\"https://outgoing.prod.mozaws.net/v1/4ca4cf5320e4a2d3d0863c59b8b989600d26935beef1602d4eacb233df3ee94d/http%3A//audition.xn.pl\" rel=\"nofollow\">http://audition.xn.pl</a> - zapraszamy :)"
}