Ha I found a gray yesterday. I was detangling the back of my hair and out came a wire-y gray! The root was still black. I also have noticed that my hair around my hairline and part is growing in blondish, and my hair is naturally dark brown. I'm sure I'm going to go gray young, my dad went gray in his early 20s and if he didn't dye his hair now his hair would be cotton snow white. So when those grays start to pop up, you can bet I'm following dad's footsteps LOL.
But watch out with all this plucking, remember that old wive's tale, for every white hair you pluck, 5 will grow back in it's place!