Also there was an interesting idea about the color pink representing death http://www.uproxx.com/tv/2012/08/breaking-bad-allusions/3/
cool link. interesting idea, but kind of a stretch. what about Jesse PINKman then? how come they don't explain that?
i DO however really dig the Reservoir Dogs theory:
Mr. Pink: jesse
Mr. White: walt
Mr. Orange: hank (who always seems to be wearing orange).
SPOILER ALERT - this is how the movie reservoir dogs ends (from wikipedia):
Mr Pink, who hid under the stairs, takes the diamonds and flees the warehouse. Police sirens and shots are heard outside. As Mr White cradles Mr Orange in his arms, Mr Orange reveals that he is indeed an undercover cop. The devastated Mr White points his gun at Mr Orange's head. The police storm the warehouse, demanding that Mr White drop his gun. Mr White pulls the trigger before shots fire.