Wow, dixbie, you hit the jackpot! (The link opened right up, for me--are you still having that trouble?) These were two of the things I learned:
*bonnet rouge: red cap worn during the French Revolution as a symbol of liberty.

*Phrygian cap: conical cap with the top bent forward, named for an ancient people of Asia Minor. It was worn as a symbol during the French Revolution and is now also known as the cap of liberty.

Helen, you should like Section C: Terms related to hat making.

--Hey, once again, I tricked the system without meaning to: I typed in {purple], but {/blue], and it did what I wanted it to.