"Blue" in my Hair

Yesterday afternoon, Samuel says to me, "Mommy, why do you have blue in your hair?". Blue in my hair? My mind whisked through my day trying to figure out what I had handled that had gotten blue in my hair. Paint? Food? I kneeled down next to Samuel and asked him to show me where the blue was. He reached up and pointed to the good inch and a half of gray hair showing along my part in my hair.
Sigh.
Note to self: Eight weeks is too long in between hair colorist appointments.
Note to others: I am really, really going gray.