Can lead to the nipple and areola color deepened. 2, Some physiological changes could also result in alterations in large from the nipple. Pregnancy led to increased estrogen and progesterone. Women after pregnancy, Starting from early pregnancy, the nipple and areola color deepened, by turns crimson through the light brown. Some women (under three decades old -45 years of age), the situation in the absence of pregnancy. Nipple and areola color deepened slowly. This color change suggests women have “one off"in the increased estrogen. First and foremost, a good copulation equates good mood.