OMG L.! I thought my daughter was the only one who experienced this. Yes, when she was about your daughters age, the same thing happened to her. It started off gray and eventually even went to a white and then eventually back to gray, then khaki and ultimatelyback to normal. Very freaky..I googled, and panicked. Called the doctor ASAP. I brought the doctor a stool sample from a recent diaper change and they ran a test. Everything looked good. They checked her for Hepatitis and that came back negative. She said it was probably a virus than ran its course. Very weird. I would call the pediatrician in the morning and explain. Also, save a diaper that has the BM in it. It will be very helpful in the long run. Good luck to you and your little girl.