Examine source code of Forest Mirror 1

{
  "theme": {
    "images": {
      "theme_frame": "ComputerFotoNo26.jpg"
    },
    "colors": {
      "frame": "#fffb00",
      "tab_background_text": "#0022ff"
    }
  },
  "version": "2.0",
  "name": "Forest Mirror 1",
  "manifest_version": 2,
  "description": "Too <a href=\"https://outgoing.prod.mozaws.net/v1/4f303da57fbeacf18beb9ebd37a0e4f58cbf4e599cad1dd8bdc81eced3b84220/http%3A//walking.In\" rel=\"nofollow\">walking.In</a> the forest in 3D"
}