Examine source code of Christopher

{
  "theme": {
    "images": {
      "theme_frame": "headpersona.jpg"
    },
    "colors": {
      "frame": "#ffffff",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "Christopher",
  "manifest_version": 2,
  "description": "Minimalist design, \"Christopher\" in Helvetica displayed against white/dark gray gradients in the background.\n\n<a href=\"https://outgoing.prod.mozaws.net/v1/48b29ad7869cf6bd7cc9c18492d11d39ceaaa93e67835eee448b44756bcfcd04/http%3A//www.christopheroftherobin.com/\" rel=\"nofollow\">http://www.christopheroftherobin.com/</a>"
}