It looks like a normal to me as well. There are small spots of blushing along the back, but the head is dark. Can you post a pic of his belly? Is it clear?
check out this thread:

http://www.ball-pythons.net/forums/s...ad.php?t=62699

It says "There are many more variations of Pastels, but they all follow the same rules.

1. Faded Head
2. Green eyes
3. Pastel Coloration
4. Clean stomachs
5. Most animals have some degree of blushing (some lines do lack blushing)