Where'd they get the flags?

If you've been watching the news from Libya--and how can you not be?--you've seen the opposition (or should we call them rebels, or just the people?) flying black, red and green flags with a crescent and star. That was the Libyan flag under the monarchy that Qaddafi overthrew in 1969.

So, where did they get all the flags? There seem to be too many for them to have been made in the past couple of weeks. Have people been saving them all these years, dreaming of the day when the dictator would fall? Has there been an underground movement making flags as a means of resisting tyranny?

If you know, or have an idea, let us know.