My long post didn't go through and since I am on a phone short and simple.and somewhat harsh but honest...
Don't breed your petstore animals. You will produce crappy babies who's health issues will break thier owners heart and leave rescuers a huge mess to clean up. If you want to breed go to a reputable...REPUTABLE ....breeder and get high quality breeding stock. No body wants a chinchilla from someone breeding mutation to mutation just based on what colors they can get..that.is genetically unsound and ends up with a defect.