some of the morphs that we call codominant / incomplete dominant might just as well be called recessives.

for example, the white diamond / russo leucistic is a recessive trait. as in, to get the white snake, you need the homozygous form. but it turns out that while "het russo", the heterozygous form, is really really subtle, people are able to pick them out of a clutch. so now we call it codom, with the white diamond being the super form, but we still call the heterozygous form "het russo".

viewed as a codominant, "het russo" is really really subtle, but the very obvious super form, the white diamond, completely justifies it.