How do i make my chao in sonic adventure battle 2 purple to make it a night chao it come out white

Well to make a NIGHTS chao you need to give your baby chao all purple animals (Parrots, Peacocks, Condors) and purple chaos drives. wait for it to mature and it should look NIGHTS. you can buy any colored egg you want from the black market and make it a NIGHTS chao. I would buy a purple egg for making a nights (or white).