Examine source code of Louvre Museum

{
  "theme": {
    "images": {
      "theme_frame": "header.png"
    },
    "colors": {
      "frame": "#8f5429",
      "tab_background_text": "#ffe3b8"
    }
  },
  "version": "2.0",
  "name": "Louvre Museum",
  "manifest_version": 2,
  "description": "The Louvre museum in Paris, France.\n<a rel=\"nofollow\" href=\"https://outgoing.prod.mozaws.net/v1/4ed1498ecf9a091b1f238e2b5197651b4bbfc0d8e31471fce2ecdd6e6f7026e1/http%3A//www.louvre.fr/en\">http://www.louvre.fr/en</a>"
}