Is it possible to have 2 different colors of lips?

My girlfriend's lower lip is lighter than the upper lip, how can I assure her that it is normal? Is it something she should worry about?Is it possible to have 2 different colors of lips?
You're girl friend is upset because the lips on her face are different shades? It's the most normal thing ever, just most women cover it up with cosmetics. It's fine.Is it possible to have 2 different colors of lips?
she is ok my top is darker than my bottom one and i was born like that

facial body