a pweter is a snake with both the cinnamon (cinny) and a pastel gene.. follow this link to see for yourself.,,http://www.worldofballpythons.com/morphs/pewter/
and follow this link to see this http://www.worldofballpythons.com/wizard/ and then put pastel and cinnamon in for the 2 bps.. it will show you... you will get 25% normals 25% cinnamon 25% pastels and 25% pewters when breeding a cinnamon to a pastel...