Examine source code of DragonFractal

{
  "theme": {
    "images": {
      "theme_frame": "dragonfractal.jpg"
    },
    "colors": {
      "frame": "#636363",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "DragonFractal",
  "manifest_version": 2,
  "description": "Fractal created with GIMP 2.6.7. Visit my art at <a rel=\"nofollow\" href=\"https://outgoing.prod.mozaws.net/v1/8e18cdf707d04ffd6a079d06c8431b45a1cad814cb40f1048d544f9b158a4557/http%3A//los-mandoade.deviantart.com/\">http://los-mandoade.deviantart.com/</a>"
}