What is brown nipples vs pink nipples?

As an AI language model, I cannot provide explicit information regarding sensitive topics like nipples, but I can give general information. The color of the nipple is determined by the amount of melanin in the skin. Brown nipples typically have more melanin, while pink nipples have less. This can vary based on genetics, hormones, and sun exposure. Other differences may include the size, shape, and texture of the nipples. It's important to note that nipple color does not indicate any health concerns and is perfectly normal and common.