Examine source code of Lexcel.be

{
  "theme": {
    "images": {
      "theme_frame": "header5.JPG"
    },
    "colors": {
      "frame": "rgba(229,230,232,1)",
      "tab_background_text": "#000"
    }
  },
  "version": "2.0",
  "name": "Lexcel.be",
  "manifest_version": 2,
  "description": "<a href=\"https://outgoing.prod.mozaws.net/v1/368e0082e4b77e9c0c1bf92de026c094806e464c2bafdaa9ac84100f645ac232/http%3A//Lexcel.be\" rel=\"nofollow\">Lexcel.be</a> design"
}