ok... so i havent read the last 4 pages so forgive me for dup data.. but here goes my 2 cents. traits are either dominat co-dom or recessive to what we consider the 'norm' so what does that mean...
recessive traits are just that. In het form they are not seen at all. you wouldnt know its there. Like if i carried a trait for blonde. I could have a blonde child but by looking at me, there is zero indication of it.
co-dom is something that in het form will be visual to a degree along with what we consider 'normal' pattern. because to form any trait it takes 2 parts on a chromosome 1 from each parent.so in this example pastel can be seen in conjunction with normal traits. when 2 pastel parts are on the same chromosome then you get the homozygous of the trait. such as super pastel.
now with dominant traits it will completely over ride and look 100% the same whether het or homozygous. because it dominants the normal gene completely. think of brown eyes on a person. there is no super form of it that is visual,but if it is in het or homo on the child it is a visual 'morph'
now here is the fun...
traits are dom, co-dom, recesive to one another. example spider and pin are co-doms to one another. and pretty much all of the co-dom traits are as well. now the question comes well what about pastel and pin? or one of the combos just like that... well the part of pin that is the dom to norm is not always changed. only morphs that also change the pattern change what the pin looks like. pin is about as basic of a gene as there is. mojave lesser enchi desert, etc change both pattern and colors. and that gene, the tiny little piece of data that it is carries so much info it does easily carry data for both pattern and color in a single half of a chromosome.
hope that helps.