Color in Sin City???

Rating: Null/10 (11 April 2005)

First off, absolutely amazing. I had heard good things but I was not prepared for things that were so good. Quick question though, for the deeper "IMDB'ers". What do you think color represents? I was trying to keep a tally of what was in color, girls(some), eyes(some), cars(some), blood(some), and hair(some). What did I forget?
I was thinking the only things that matter in Sin City were in color blood, dames and cars. That is a little to superficial I think though, what do you think? I found this to be the best part of the movie, sitting in the movie and trying to figure it out. This should be an interesting thread ca't wait to hear from everyone!