Examine source code of Serene Seagull

{
  "theme": {
    "images": {
      "theme_frame": "SereneSeagullHeader.jpg"
    },
    "colors": {
      "frame": "#303030",
      "tab_background_text": "#303030"
    }
  },
  "version": "2.0",
  "name": "Serene Seagull",
  "manifest_version": 2,
  "description": "This is one serene seagull.\n\nMatching wallpaper here:\n\n<a rel=\"nofollow\" href=\"https://outgoing.prod.mozaws.net/v1/bd091f1fe3a39e7c6bbc2d6bc01cb234342008c348dd3d123d8a076dc9687e1b/http%3A//i30.photobucket.com/albums/c314/dawgsnkats/SereneSeagullWallpaper.png%3Ft=1241216308\">http://i30.photobucket.com/albums/c314/dawgsnkats/SereneSeagullWallpaper.png?t=1241216308</a>"
}