Just that, really. I'm 40 and I have what is now a pretty noticeable amount of grey in my hair. It's evenly distributed throughout. I mentioned it to my hairdresser the last time I had it cut, and she said she thought it looked "striking", like I have silver highlights. It would be in her interests for me to have it coloured, so I tend to believe she meant what she said!
I don't know if I feel old enough to fully embrace it yet, though. I have a short, layered sort of bob which I'm trying to grow a bit longer. My natural hair colour is mousy brown. I would say I look my age and I have no interest in looking "young", whatever that would entail, but on the whole I'm really low maintenance and I don't do much with makeup or feminine clothes. I'm also fat and not attractive. I worry that I would need to be better put-together, as it were, to pull off the grey look, rather than looking like I've just stopped bothering.
Has anyone embraced their grey at a relatively young age, and did you have to make more of an effort with the rest of your appearance to make it work?