public boolean onCommand(CommandSender sender, Command command,
			String label, String[] args) {
		if (!plugin.hasPerm(sender, "worldlist", true)) {
			sender.sendMessage(ChatColor.YELLOW
					+ "You do not have permission to use /" + label);
			return true;
		}

		sender.sendMessage(ChatColor.YELLOW + "Worlds running on this Server");
		for (int i = 0; i < plugin.getServer().getWorlds().size(); i++) {
			ChatColor color;
			if (plugin.getServer().getWorlds().get(i)
					.getEnvironment() == World.Environment.NETHER) {
				color = ChatColor.RED;
			} else if (plugin.getServer().getWorlds().get(i)
					.getEnvironment() == World.Environment.NORMAL) {
				color = ChatColor.GREEN;
			} else if (plugin.getServer().getWorlds().get(i)
					.getEnvironment() == World.Environment.THE_END) {
				color = ChatColor.BLUE;
			} else {
				color = ChatColor.BLACK;
			}
			sender.sendMessage(color
					+ plugin.getServer().getWorlds().get(i).getName());
		}
		return true;
	}