But if you pushed for red by selective breeding, you should be able to get a high contrast red and white snow, or super high contrast albino within a decade or so, and I haven't seen it attempted other than so called high contrast albinos, which don't look any darker than they did 8 years ago. Just look at what we've done with selectively breeding normal leopard geckos. We have taken a dull yellow animal and got to the point where the dull yellow is extreme orange. Is it accepted as being able to be done with balls, and just not getting worked on, or do we just not know?
Edit: You also said that caramels seem to push the limit of red compared to most other morphs. If that was true, and it was due to erythriphore, why does everyone say that a homozygous albino homozygous caramel would probably just have the phenotype of a normal albino. Wouldn't it be assumed that it would be a bright orange and white snake with much higher contrast that a normal albino?