I know there's no way to be 100% sure unless you see them hatch black and white, but do these look Mack snow? They have a normal pattern, but a lot of purple. Female just laid some eggs so I'm fattening her up. Males a giant.
Male
Female
The pics not very good, I'll try to get another one later. The person I got them from got them from a breeder that said they were mack snows, males a giant. I know you cant tell 100% until you see babies pop out black and white, so I'll probably have to wait and see