Examine source code of burn fox

{
  "theme": {
    "images": {
      "theme_frame": "burnfox2.jpg"
    },
    "colors": {
      "frame": "#968383",
      "tab_background_text": "#0003ba"
    }
  },
  "version": "2.0",
  "name": "burn fox",
  "manifest_version": 2,
  "description": "i have made with GIMP 2, i hope you Enjoy.\nif you want to understand how to make this effect look this: \n<a rel=\"nofollow\" href=\"https://outgoing.prod.mozaws.net/v1/b79bb3907e24f1e6ffb81a8c2f902dc4e5cd7b15ce629484affab0255ec986e6/http%3A//www.youtube.com/watch%3Fv=mHMLYYe2XaM\">http://www.youtube.com/watch?v=mHMLYYe2XaM</a>"
}