Color Blindness

Does being color blind mean you can only see in black and white?

Although it is true that some color blind people are unable to perceive any color, complete color blindness (monochromacy) is the rarest form of color blindness (.00001% of cases), and it is therefor a misconception to think that those who are color blind can only see in black and white. In actuality, 99% of those with a color deficiency have Red-Green color blindness, and as its name suggests, they have trouble distinguishing red and green hues. The next common form of color blindness, although rare in itself, is Blue-Yellow. Interestingly enough, around 12% of the population experiences some form of color blindness, the majority of which are male (24:1). Although there is no current treatment for the condition, it is for the most part hereditary, and those with it have a low amount or complete absence of one of the three color sensory receptors (red, blue, green). It may not be entirely bad news to be color blind, as a loss of color perception often leads to better motion detection.

sources:
http://www.toledo-bend.com/colorblind/aboutCB.html
http://en.wikipedia.org/wiki/Color_blind