Examine source code of Firekakapo

{
  "theme": {
    "images": {
      "theme_frame": "Firekakapo_header.jpg"
    },
    "colors": {
      "frame": "#c9c9c9",
      "tab_background_text": "#000000"
    }
  },
  "version": "2.0",
  "name": "Firekakapo",
  "manifest_version": 2,
  "description": "A simple design, featuring a stylized kakapo feather. It's a small mock-up of Firefox with a natural flair to it and a soft gradient in the background.\n\nAlthough I'm not affiliated, to find out more about the kakapo and how you can help it survive, go to:\n<a href=\"https://outgoing.prod.mozaws.net/v1/34b6b26b9787eaad2e473ce6bfb8ef23451bda2e7c652f37201d115907fa59f2/http%3A//www.kakaporecovery.org.nz\" rel=\"nofollow\">http://www.kakaporecovery.org.nz</a>\n\nNOTE: This Persona was designed for Windows. It will work on Safari, but the text may be hidden by the search bar. It is recommended to have some buttons between address bar and search bar, e.g. NewTab."
}