Examine source code of Awesome flag

{
  "theme": {
    "images": {
      "theme_frame": "header.jpg"
    },
    "colors": {
      "frame": "#d1d1d1",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "Awesome flag",
  "manifest_version": 2,
  "description": "Nice smiley flag\nfor more information check \n<a href=\"https://outgoing.prod.mozaws.net/v1/cfbbc1b977424a119ce8d1a2ea10e42752447e648c5b1c6fb033950c9b8c5779/http%3A//www.julian-pe.de.vu\" rel=\"nofollow\">www.julian-pe.de.vu</a>"
}