My kids, who adore our chickens and are very responsible about taking care of them, used some poor judgement this morning. They wanted to have a celebration with the chickens and painted one of them blue. She is by no means covered, but there is a fair amount on the top of her back. Her downy under-feathers are clean. It is acrylic, not washable paint. I wouldn't want her wet now anyway, as it is too cold here in NY. My inclination is to just leave it alone, but I am wondering if it will affect her ability to keep warm and dry. I know their feathers are perfectly formed for the job. What do you think? Thank you!