This is all very interesting!!! But that doesn't mean I understant it!!!.....LOL
I have no idea what you mean by colours being masked or carriers or anything (Gizmo is our 1st cat, and now her kittens are our 1st,2nd,3rd &4th kittens...LOL) I'll try to find a site to help me understand colours etc!!
Thanks for bringing it to my attention and educating me