I had my first HT in 1/09 at age 50. My hair was/is still mostly light brown, but more gray in the usual areas, especially donor, sideburns, temple points, beard and yes, the gray hairs come up gray in the recepient area, at least so far. (i'm just glad they came up) They're mixed in pretty well, and can be dyed of course. Overall, looks much better notwithstanding.