In my youth,Greens were the nerds of the neighborhood. They wore slide rules and pocket protectors. Today, they're the kids who are addicted to Nintendo. He's my nephew and I gave him the Color Survey we use in our consulting work. The simple answer is, they do it unconsciously.
Chances are, nothing matches.
I know a Green petroleum engineer who regularly wears a blue sport coat and trousers from a black pinstripe suit. That's a Green. Her hair looks like she simply forgot to brush it. She has two earrings in the same lobe. It's just some informal garment to cover her skin.