Here's a good basic morph guide, it's kind of tricky to understand the differences between harleys, flames, and pinstripes at first just from looking at pictures of each one, you really have to see pictures and read the breeder-created definitions.

http://www.pangeareptile.com/morphs_colors.htm

The definitions for those 3 morphs are kind of like the definitions used in breed standards for cats and dogs, and not just names of single-gene mutations as is most common with ball pythons.