Can an employer suddenly enforce a new rule stating that you HAVE to permanently color your hair?

I work in a hair salon , and have a lot of gray hair which is complemented all the time. My customers don't mind it a bit and it doesn't hinder my ability to "sell" colors to clients. Apparently after 2 1/2 years of employment it suddenly offends my boss though. Is there some discrimination law... show more I work in a hair salon , and have a lot of gray hair which is complemented all the time. My customers don't mind it a bit and it doesn't hinder my ability to "sell" colors to clients. Apparently after 2 1/2 years of employment it suddenly offends my boss though. Is there some discrimination law for this situation??
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