Examine source code of Google IO 2010 Theme

{
  "theme": {
    "images": {
      "theme_frame": "google-io-2010-up.png"
    },
    "colors": {
      "frame": "rgba(229,230,232,1)",
      "tab_background_text": "#000"
    }
  },
  "version": "2.0",
  "name": "Google IO 2010 Theme",
  "manifest_version": 2,
  "description": "The official Chrome theme for Google I/O 2010.\n<a href=\"https://outgoing.prod.mozaws.net/v1/4411ac74bd5c7e4fcaa5e4529f9cd1c1408b1d29b225d42b15984508eedc039c/http%3A//code.google.com/events/io/2010/\" rel=\"nofollow\">http://code.google.com/events/io/2010/</a>"
}