Well, there are many many differnt morphs or "paintjobs". Check out some of the breeders websites linked in the ads on this website and you should find a bit more information on them. Basically, they are just genetic mutations which give the snake different coloration than your "normal" ball python. A normal ball python doesn't have any special genetics and is commonly sold in pet stores.

20-30 minutes a day isn't too bad. I try to limit handling sessions to 10-15 minutes. They can be over handled, but I don't think 30 minutes a day will do it. Handling is sometimes stressful for them and you will learn to read your snakes body language to know when they have had enough.

P.S.