Color blindness is a trait?

X recessive

Y recessive

X dominant

None of these

Color blindness is inherited as a recessive trait on the X chromosome.

This is known in genetics as X-linked recessive inheritance.

Males have only one X chromosome and are hemizygous for X-linked traits.

Additional informational:

Colorblindness is an X-linked chromosome (criss-cross inheritance)

The man has XY chromosomes (1 X chromosome)

and female having XX chromosome (2 X chromosome).

If the male is colorblind but the mother is normal then there is a 50% chance to reproduce the colorblind disease progeny and 50% other.