Well, if it’s been the same color your whole life, it’s blonde. If it used to be a different color, but changed recently, that’s probably gray.

I know what white hair on me looks like, since I have an odd diagonal stripe of it that’s one hair wide, as a result of some childhood head injury or other. (And, yeah, kinda scary that I had *so many* head injuries as a child that I’m not sure which one might have caused it.)