The thread is not about genetics, but the hidden gene is believed at this time to be dependent recessive. The lesser gene is co-dom. If a pastel albino is bred to a normal 50% of offspring should be pastel and all the offspring will be het for albino. Only difference here is that inorder to become visual not only do both parents have to be hets, but a second gene has to be pressent such as the lesser or butter gene.