Examine source code of Metuzalem

{
  "theme": {
    "images": {
      "theme_frame": "metuzalem-h1.jpg"
    },
    "colors": {
      "frame": "#c2c2c2",
      "tab_background_text": "#000000"
    }
  },
  "version": "2.0",
  "name": "Metuzalem",
  "manifest_version": 2,
  "description": "Metuzalem's famous webpage design scene - floating island as found on <a href=\"https://outgoing.prod.mozaws.net/v1/727b0d6dd0a39ecd09c097908090e9e1d564de773d71daaae3d8aa32f8a5b0b1/http%3A//www.metuzalem.hr\" rel=\"nofollow\">http://www.metuzalem.hr</a>"
}