In places, yes. Like Sali, I'm 30% grey. I had 4 inches of hair chopped off and an inch of previously dyed hair at the ends were darkened as the colour had lifted so much they were on the orange side. (If I would have cut more off my hair, I would not have had to use dye at all.)
As I am much greyer than Sali at my temples, I did not have any highlights. That said, I am due to have a few more white baby lights added in in a few weeks time.
Ah so you have a bit of a head start on her, then? Good luck with it!