Examine source code of devil_hamburg

{
  "theme": {
    "images": {
      "theme_frame": "devil.jpg"
    },
    "colors": {
      "frame": "rgba(229,230,232,1)",
      "tab_background_text": "#000"
    }
  },
  "version": "2.0",
  "name": "devil_hamburg",
  "manifest_version": 2,
  "description": "Hello, Here I present you my designs, the desktop resolution of 1680x1050, I've created one of the desings I hope you liked your greeting sitkra\n\n<a href=\"https://outgoing.prod.mozaws.net/v1/7942647ca6bad399158749a81554e239eac7c8f3d8fa1d04159bd1c1fc481f49/http%3A//www.elite-commandos.de\" rel=\"nofollow\">www.elite-commandos.de</a>\n\nHallo,\n\nHier stelle ich euch meine entwürfe vor die ich auf einen desktop Auflösung  von 1680x1050 erstellt habe ich hoffe die desings gefallen euch Gruß euer sitkra\n\n<a href=\"https://outgoing.prod.mozaws.net/v1/7942647ca6bad399158749a81554e239eac7c8f3d8fa1d04159bd1c1fc481f49/http%3A//www.elite-commandos.de\" rel=\"nofollow\">www.elite-commandos.de</a>"
}