Just curious, besides yourself how many other people have you talked with that think this may be the case?
None! So if I'm right I get full credit for it! If I'm wrong, oh well... it's just a theory.

The only pewter owner I've discussed it with doesn't think it's likely but I actually first got the idea (there goes my credit) from Graziani's site when he was first promoting the idea that cinnamon PASTEL might be genetic due to similarities with Pastel Jungle. I think there is an excellent chance we'll get some answers this summer. Should we keep score?

Homozygous spider?

Caramel and Albino alleles?

Pastel and Cinnamon alleles?

Het pieds bias toward belly markers?