Examine source code of FCS Bem Pensado

{
  "theme": {
    "images": {
      "theme_frame": "Cebecalho.jpg"
    },
    "colors": {
      "frame": "rgba(229,230,232,1)",
      "tab_background_text": "#000"
    }
  },
  "version": "2.0",
  "name": "FCS Bem Pensado",
  "manifest_version": 2,
  "description": "By <a href=\"https://outgoing.prod.mozaws.net/v1/cff395cae64cd84575b8f3d088561292eca16322846f50fd0973e9df4d4fb2c2/http%3A//www.fcsbempensado.com.br\" rel=\"nofollow\">http://www.fcsbempensado.com.br</a>"
}