At first no he could not but through selective breeding, picking very pretty light females and holding back brighter males for a few generations, you could get some nice pastels. It will just take time. I would contact the breeder and let them know of the mistake and if they do not stand by their product you could try to get a refund/replacement for him. If not you could go through a different breeder and get a different one and just keep him as a pet.