I saw a really interesting one today. At Staples, no less. A youngish woman--at least I think it might have been a woman--with closely shaved head on either side but with a big mohawk in the middle colored with shades of green, purple, pink, blue, and orange, walked down the aisle of pencils. (I was looking for a particular 0.7-mm sort for my very picky son. I can't remember if the colors followed a pattern of increasing or decreasing wavelength, or if it was more like the GWBush administration security alert colors, randomly arranged, but either way it was quite noticeable. The fact that I noticed it, and did a double take, doesn't necessarily convince me that my original yes vote was correct because it was the hair's shape as much as the color that was noticeable, but I thought it noteworthy and relevant to the thread.
I hope the boy didn't see that.