Examine source code of Niklas Webdesign

{
  "theme": {
    "images": {
      "theme_frame": "header.jpg"
    },
    "colors": {
      "frame": "#b5ff14",
      "tab_background_text": "#75db0f"
    }
  },
  "version": "2.0",
  "name": "Niklas Webdesign",
  "manifest_version": 2,
  "description": "<a href=\"https://outgoing.prod.mozaws.net/v1/cde7568ab62eeb27a4d96e9679b3572e587fb10694ba8ba35e9a6910e45dccf0/http%3A//niklasdesign.de.vu\" rel=\"nofollow\">niklasdesign.de.vu</a>"
}