If that's your only available source, then give them a try. Peppered and Albinos are both really hardy(and fun to watch!) cories. As long as your tank is cycled and the tank mates don't pick on them too much, they should be pretty well off.
Proud mom of Samuel, the red, white and blue VT and Darius, the purple and red HM.
Samuel's Tank Mates:
4 peppered Cory Cats
1 Siamese Algae Eater