Examine source code of vidisvet.com

{
  "theme": {
    "images": {
      "theme_frame": "firefox_skin_vs-copy.jpg"
    },
    "colors": {
      "frame": "#3b3b3b",
      "tab_background_text": "#f7951e"
    }
  },
  "version": "2.0",
  "name": "vidisvet.com",
  "manifest_version": 2,
  "description": "Serbian website dedicated to traveling (and everything in it), partying, freedom, hedonism, enthusiasm, joy and easy way of living  "
}