There are four main types of nipples. They can be protruding, flat, inverted or unclassified. Two of your nipples need not be of the same type. You can have two different types of nipples on each of your breasts. So we get eight different categories of nipples. The nipple is the part located right in the centre of your breast. The part around that, which is generally darker in colour is called areola. The nipple and areola can be of many different colours. "Depending on your skin tone, the nipple can be light pink, dark pink or dark brown. Generally, the colour of nipples in Indian women is dark brown. That is perfectly normal," said Dr Shetty.