Examine source code of AboutBeerschot.be 2

{
  "theme": {
    "images": {
      "theme_frame": "testix.JPG"
    },
    "colors": {
      "frame": "#000000",
      "tab_background_text": "#4c0f6b"
    }
  },
  "version": "2.0",
  "name": "AboutBeerschot.be 2",
  "manifest_version": 2,
  "description": "<a href=\"https://outgoing.prod.mozaws.net/v1/38c290940cd10aaea3d6a502954dadbcc20cee2e09664986eeac98b3bbd46912/http%3A//AboutBeerschot.be\" rel=\"nofollow\">AboutBeerschot.be</a>-persona"
}