Examine source code of Laughing Pelicans

{
  "theme": {
    "images": {
      "theme_frame": "laughing_pelicans_header3000x200.jpg"
    },
    "colors": {
      "frame": "#6dbedb",
      "tab_background_text": "#000000"
    }
  },
  "version": "2.0",
  "name": "Laughing Pelicans",
  "manifest_version": 2,
  "description": "Anyone got a good pelican joke?  These guys have one."
}