If you have kids and you haven’t gone gray yet, either stop lying or just give it time.
There are days I can practically feel my hair changing color as it’s happening. Which is usually when my 6-year-old is throwing a fit about having to go to bed/having to go to school/having to take a bath/having to eat dinner/having to do his homework/etc.
Going gray is a part of getting older, and a part of parenting, and I’m okay with it. I’m not vain. Besides, a little salt and pepper worked out great for George Clooney and I’m nothing if not exactly like George Clooney!