Examine source code of Violet Marbles

{
  "theme": {
    "images": {
      "theme_frame": "pinkmarbles_header.jpg"
    },
    "colors": {
      "frame": "#f7f2f2",
      "tab_background_text": "#6c62fc"
    }
  },
  "version": "2.0",
  "name": "Violet Marbles",
  "manifest_version": 2,
  "description": "Die Dark-Art-Community\n<a href=\"https://outgoing.prod.mozaws.net/v1/4a5e3c09e36223de765a00a2d75f578e70c713fae58a337eb3320f832080cecf/http%3A//www.aliartis.de\" rel=\"nofollow\">www.aliartis.de</a>"
}