That's exactly what my hair looked like when I tried to dye it for Nuriko! You couldn't really see it at all, unless you got a close-up look at some of the hairs that started out grey

I wish the color would show up better, but I don't really want to bleach my hair before dyeing it, so I guess I just have to live with barely visible highlights.

I do think it would be neat if I could get my hair to do the sticky-out thing on demand for conventions. I'd probably have to import Japan's humidity, though.