Thank you. Also, I just checked today and at least one of the white ones does not appear to have red eyes. The mother is a rescue. They said giant chinchilla and she looks it but could be a mutt. The dad is half giant chinchilla and half American chinchilla (from an American chinchilla breeder)Looks black based to me
If it has a dark undercolor, or it was born dark, it's just a light chinchilla. might have a wideband gene. if it was born pink, it could be a ghost chinchilla. it's a recessive gene (non-extension) that runs in some american chinchilla lines.
So we definitely have a blue/grey eyed white one. Could the light grey be hetero for Vienna?still looks like a chin, the white one that isn't white might be a frosty. I've never seen them completely fade out, sometimes they are just lighter chins.