yep Joe, as you, I saw them years ago and like them a lot, so when I recently found the DVDs I got all three of them at once. So far my favorite one with difference is red, there the images, music and French speech fit so well together that you feel the whole movie has its own rythm.
That's common to all three movies, however, but maybe is the warm feeling from the red color that adds that final extra something.
So hope you'll do that marathon soon. Don't forget the pop corn !