Examine source code of Shadows MC

{
  "theme": {
    "images": {
      "theme_frame": "header.png"
    },
    "colors": {
      "frame": "rgba(229,230,232,1)",
      "tab_background_text": "#000"
    }
  },
  "version": "2.0",
  "name": "Shadows MC",
  "manifest_version": 2,
  "description": "For my Family\n<a rel=\"nofollow\" href=\"https://outgoing.prod.mozaws.net/v1/873f17f115908d78e85fe42e08fd474fa58e088acb6ebb66b1db33eedc7638d0/https%3A//www.facebook.com/pages/Shadows-MC-EGYPT/448588528650596\">https://www.facebook.com/pages/Shadows-MC-EGYPT/448588528650596</a>"
}