This post is quite topical for me right now. My warm-brown hair went prematurely grey/white when I was in my late 20's. Over the next many years I dyed it every color (all the natural colors and all the punk colors)- I truly mean every color, except black. I avoided black only because I knew it would look terrible with my skin tone.
For the past few years I had it a really nice and fun platinum blonde, which blended well with the white. Then I just got tired of the upkeep and dyed it my natural brown, a light brown. My stylist put some highlights in it and I was very pleased.
Then of course, I got white roots. Yuck. Last week I saw my stylist and was discussing with her how to proceed. I've decided to go with low-lights (dark beige blonde) blended in with the white/grey. Just before reading this post I made the appointment!