Examine source code of Fall Path

{
  "theme": {
    "images": {
      "theme_frame": "header.png"
    },
    "colors": {
      "frame": "#803131",
      "tab_background_text": "#f7f7f7"
    }
  },
  "version": "2.0",
  "name": "Fall Path",
  "manifest_version": 2,
  "description": "Stock credit: <a rel=\"nofollow\" href=\"https://outgoing.prod.mozaws.net/v1/2b11eec3fcfdf5080ededa2ed16aea6b79554181a52263fb6bc4a10f843233ca/https%3A//pixabay.com/en/users/valiunic-1720744/\">Valentin Sabau\n</a>"
}