pewter?

ok so from what i know pewter is a mix of cinny and pastel, but someone today, a larger breeder said no its black pastel and pastel??????

so the question is what is a pewter a cross between?
according to worldofpythons/morph list (or something like that?) its cinny pastel
so what do you think?
:confused::confused::confused:

Pewter is a Cinnamon X Pastel

Black Pewter is a Black Pastel X pastel

Hope this helps!