From my understanding of it you have to think of codom as the genes coexisting in the same thing, like with your pink flowers and with incomplete dominance it is one or the other either red or white.

Codom somewhere along the lines got mixed into with the snakes and that isn't exactly what it is. All of the visible (not talking any recessive genes here) morphs like pastel and spiders are really just incomplete dominance. Then you can move into boas with the salmons that are dominant genes as where half of your litter will be salmons and half will be normals unlike with the pastels were you have a 50% chance per egg that it will be a pastel. So in theory you could have a clutch of 10 eggs and get no pastels but with the salmon boas you will get salmons.

At least that is the way I understand it.