Re: What are the chances of a person being colorblind?

I assume you are referring to the most common form of color-blindness, 
the red-green type. As you may know, this type of color-blindness is 
sex-linked, so it is much more common in males than it is in females.
Among males of European descent about 8% (1/12) are color-blind; this 
number is 4% (1/25) for males of African descent. Only 0.4% (1/250) of 
females are colorblind.

Source: Ricki Lewis, Human Genetics (3rd ed.), McGraw-Hill, 1999.