Dear Maggie00, It is not unusual for there to be differences in color of the nipple/ aerola, or even size of the breasts. If you are noticing a change or have further concerns you may want to have your doctor evaluate.
Hi Maggie, if you look a few posts below, I posted to another person about this very sam ething. I have VITILIGO of both areolas. They are different colors throughout, pink/white and brown. It's a disorder of the pigment cells of the skin. It's nothing to worry about and happens to a few people, certainly we are the minority. I wish I had a picture to show you. But if you search VITILIGO on the YAHOO a lot will come up and what it is. I don't have it anywhere else on my body unless my dermatologist shines a certain light on my skin, then you can see some spots. But the only apparent areas are on my nips/areolas. My husband loves me just this way, so I don't worry about it myself. I'm 37 years old and have had this ever since I can recall (probably in my early teens I remember), but not all of my life. If you have any other qeustions, feel free to post.