How old were you when you starting covering up the grey (hairs)

I am 38 and I think that it’s time. I have dark brown hair and I can really see it at the temples. I usually wear my hair down (so, that you can’t see it at the temples), but, for Summer, I’ll want to pull my hair back.

How old were you? I have never had my hair colored. Not looking forward to it, but, it’s time.