Okay, this post assumes two things:
1) Peanut butters are codominant. I think this is pretty obvious by the fact that the hets don't look normal and there's a distinct "super" form involved. We all know that if you breed two of the supers together, you will get all super peanut butters. If you breed two peanut butters together, you'll get half supers and half peanut butters. And if you breed a peanut butter with a non-pb, you'll get half peanut butters and half normals.
2) Amelanism is recessive. Evolution wouldn't have it any other way. Any codominant forms of amelism would have been wiped out due to the fact that they stand out to predators like a beacon. But that doesn't prevent the population from still carrying the mutation and passing it discreetly to future generations as a recessive trait.
So with all of that out of the way, my guess is that the super peanut butters are het T- albino. It's so simple, and yet it explains so much.
When the super peanut butter was crossed with a T- albino, it essentially created a double homozygous peanut butter and T- albino brooks. I've been flipping through forum archives looking at pictures of jellies, and all of them seem to lack melanin and possess red eyes. Sound like characteristics of an albino? But if you recall my second assumption, albinism is recessive. So if only one parent was albino, that means the other parent HAD to be het for it. Going back to my first assumption, because one parent was a super peanut butter, all of the offspring produced should have been peanut butters. So the end result is essentially an amel peanut butter.
Now since the peanut butters are het T- albino, it makes sense that if you cross peanut butters to each other, you're going to produce double homo super peanut butters and T- albinos. This would account for the really bright super peanut butters with red eyes and--surprise, surprise--no melanin. I think they are the super form of jellies.
Having not personally worked with any of these morphs, seen the production figures, or seen the animals in person, this is all speculation on my part. But my suggestion is to cross a jelly to a T- albino. If my hypothesis is correct, half of the babies will be peanut butter and the other half T- albino, with no jelly being produced at all.
And if you cross two jellies together, you should get super jellies, which should look just like some of the (super) peanut butters Rainer's had the whole time.
Here's an old thread with peanut butter pics
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