I wouldn't go knocking on anyone since you earlier in the other thread made a claim that it was possible for it to be compatible with both albino and lav albino......
codom and dom are just terms to describe observable traits, mendel's system, it has little to do with whats going on at a genetic level, you have alleles and loci, heterozygous and homozygous, doesn't get more simple than that and this is what we are talking about. The ball python world has changed mendels system but it still works and imo makes more sense for what we are dealing with, otherwise we would be calling most things co-dom.
there cannot be more than 2 alleles on a locus, when a baby is coming to be, you get 1 allele from a locus from mom and 1 allele form the same locus from dad. while some alleles can produce similar results (ex. the 3 lines of axanthic) they are on different loci. If you have an extra chromosome you can have 3 alleles but we know what problems that usually causes.
I would be hard pressed to call anything a "color gene" because a single allele can effect multiple traits. look at the spider. for all we know the pastel gene might cause other things to happen other than just color. We don't know.
no nothing is 100% set in stone here, but judging patterns and looking at statistics you can make some pretty safe assumptions that might as well be "fact" until proven otherwise. just like the leopard being a visual het pied