I recently had to go get my drivers license renewed and joking asked if they could change my hair color to none. The DMV lady said without missing a beat, no, but I can change it to bald. I can't go back now, I'll mess the DMV all up. lol
For a while I kept an old license, from teenager time, that had blonde. Those days are long gone. Hahaha! Mine now has 'none.'