So am I. Probably my only major vanity is that I'm pushing 59, and not only have my own hair but it's mostly still ash blonde. Of course, one of the advantages of that color is that the few gray hairs I have don't show up much anyway...
I'm not vain enough to color my mustache though, even though it's been mostly gray for years.
My grandfather's hair stayed coal black into his seventies. Then when my grandmother died, a white streak started growing out on either side. It stayed like that the rest of his life.