Examine source code of Galaxy Kitties

{
  "theme": {
    "images": {
      "theme_frame": "header.png"
    },
    "colors": {
      "frame": "#f3d9ff",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "Galaxy Kitties",
  "manifest_version": 2,
  "description": "Four, cute, sketchy kittens with a galaxy theme! All art created by me~\nFor more silly kitty art visit <a rel=\"nofollow\" href=\"https://outgoing.prod.mozaws.net/v1/419e74258834d587c1c78df745911d68031fba61262474e98fff60e90b2d5f5a/http%3A//katauroramist.deviantart.com/\">http://katauroramist.deviantart.com/</a>"
}