Examine source code of New-Art

{
  "theme": {
    "images": {
      "theme_frame": "na-theme-header.jpg"
    },
    "colors": {
      "frame": "#a6a6a6",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "New-Art",
  "manifest_version": 2,
  "description": "<a href=\"https://outgoing.prod.mozaws.net/v1/83b201f1bce7effcdd541ef7a475cc44d41692cb2f530af7fbb373fbe93e22c8/http%3A//www.new-art.nl\" rel=\"nofollow\">www.new-art.nl</a>"
}