If that's what your breeder told you, then your breeder lied to you. There is no such thing as het for pastel.
Since pastel is co-dom - a pastel is technically a het for super pastel.
This link may help you to understand the genetics of a co-dominate mutation like a pastel.
http://www.ballpython.ca/genetics.html
and more specifically:
http://www.ballpython.ca/what_get/co_dominant.html
You got a nice little normal ball male ball python. I hope that the breeder didn't charge you extra for him.![]()