Six of them use aliases : Mr. Blonde , Mr. Blue , Mr. Brown , Mr. Orange , Mr. Pink , and Mr. White .
The men are given nicknames with colors so that they do not know each others names ; Mr. Blonde ( Michael Madsen ) , Mr. Blue ( Eddie Bunker ) , Mr. Brown ( Quentin Tarantino ) , Mr. Orange ( Tim Roth ) , Mr. Pink ( Steve Buscemi ) , and Mr. White ( Harvey Keitel ) .