Examine source code of HouseXpress

{
  "theme": {
    "images": {
      "theme_frame": "personas2.jpg"
    },
    "colors": {
      "frame": "#326ec2",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "HouseXpress",
  "manifest_version": 2,
  "description": "Persona dedicada a <a href=\"https://outgoing.prod.mozaws.net/v1/2c287db9edbbe227c5dc740b00240a17dd69a7dc7469084861384414c2e24a7c/http%3A//Housexpress.es\" rel=\"nofollow\">Housexpress.es</a>"
}