Doesn't really look like a black pastel to me. Maybe a better picture would help. Cinnamons also look very similar to black pastels. There are a lot of experts on here whom I am sure will chime in with more experience. Here are two helpful links...

http://www.worldofballpythons.com/morphs/black-pastel/
http://www.worldofballpythons.com/morphs/cinnamon/