One of the early named morphs (the original Ball Python guide) was called "Classic Jungle". It was thought that ball pythons from a jungle range had this bright high contrast coloration (lots of yellow and orange against really dark black) and intricate pattern. As far as I know no one has been able to reliably reproduce these. From time to time I hear of some where the pattern is supposed to reproduce so maybe they are out there recently and just not popular yet.

I think the majority of these are caused by egg stress. Here is one I hatched:



He was a small hatchling who didn't absorb all of his yolk.

I think some may have shortened "classic jungle" to just "jungle" but in either case I don't think it's typically genetic.

When what we now call just "pastel" came along it was noted that the color and pattern where somewhat similar to the "classic jungle" so the original name was "pastel jungle". This has proven genetic but you don't always get the really intricate pattern part. Here is my pastel that does show some of the pattern intricacy that probably lead the original name including "jungle":



After pastel jungle aka pastel was proven Greg Graziani was working with a new male he made a case for being genetic based on similarities to pastel jungle. I suppose due to these similarities he named that morph "cinnamon pastel". It ended up proving to be genetic but even though the combo with pastel jungle was stunning (the pewter) we now know the two mutations are unrelated. Both names have now been shorted, pastel jungle to just pastel and cinnamon pastel to just cinnamon.

So, it's a little confusing but maybe the history helps some.