Examine source code of skulldesign_basic

{
  "theme": {
    "images": {
      "theme_frame": "Unbenannt-1.jpg"
    },
    "colors": {
      "frame": "#bababa",
      "tab_background_text": "#2b2b2b"
    }
  },
  "version": "2.0",
  "name": "skulldesign_basic",
  "manifest_version": 2,
  "description": "<a href=\"https://outgoing.prod.mozaws.net/v1/42b54c663ad45e0454db471db5359b09f8ac95cb4bd295e250bbdd6fc574a63b/http%3A//skulldesign.net\" rel=\"nofollow\">skulldesign.net</a> fetzt!"
}