This is me. Hair was naturally dark brown, and still is underneath. I've been highlighting it for about 8 years now, varying light and dark. I am meant to be growing the grey in, but am not really committed/don't feel ready.
You can tell by the texture that it's going grey i.e. all sticky up and wiry.
I don't do much with it; mostly wash and leave it to dry then put it up (for ease and sport). I do sometimes straighten it, which does deal with the wiry nonsense.
A lot of me still wants to be brown, but that's the road to never going grey.
Dunno. Any ideas for something a bit different?