There are some minor differences between the towels of different colors. First is that the dye in darker color towels is heavier, and makes the towels feel less soft. So a black, dark red, or dark green towel will be a bit more rough than a white, light blue or yellow towel. Second is that some of the darker colors like black and red will bleed in the wash. Third is that lighter colors will stain and show the dirt they have picked up (sometimes this is desirable and sometimes it is not).