Joslyn, I have 4 or 5 white eyebrow hairs. I don't do anything with them. As most people around her can tell, I don't really care what age people think I am so a few white eyebrow hairs don't bother me. Besides, unless someone is looking at me thru a magnifying glass I don't think they'll even notice them.
I have white hairs 'other' places too. My carpet matches my drapes. : )
As for glasses, I'm no help. I like rimmed glasses and have never tried rimless.