Question

does the mother carry the allele for color blindess or does it depend on the situation at hand?

Answer 1

I believe the mother is the one who carries the allele for color blindness, which is a recessive allele.

Answer 2

Actually, both can carry the allele. The allele only show up on the X chromosome though.

Answer 3

The mother is a carrier but she will get the disease only if she is homologous.
The male gets it though because he doesn't have a normal dominant X to overshadow the recessive defective X as he has a Y.

The disease allele is present only present on the X chromosome, not on the Y.