What? Are you kidding?
Because, I'm not sure I would want to walk up to a breeder and inquire about a four morph combo. Especially if they are busy. That's like saying Ford, Chevy, and Dodge should just be referred to as cars, trucks, and vans.
"Excuse me, I'm looking for an Axanthic, Pastel, Cinnamon, Spider?" I'm pretty sure you would have to repeat that a few more times. Rather than "Axanthic Pewter Bee." People just need to learn what they mean. It's not that difficult.