If I was colorblind how come I'm not?

Color blindness is a -linked recessive trait. It is located on the X chromosome. Females have two X chromosomes, so it behaves a a recessive: one working copy is sufficient. In males, there is only one X chromosome, received from the mother (the Y chromosome came from the father), so it behaves in a dominant fashion, but because it is an unpaired allele, it is not a true dominant process.