Let us discuss watch band colors

Gentlemen, what are your thoughts on watch band colors? Does a leather band need to match the same general color of your belt/shoes? Does a metal band need to match the same general color of your belt buckle/any rings you wear?

I have always cringed a bit at a black leather band with brown shoes, or vice versa.

However, when it comes to other leather colors, or NATO colors, I've always felt like if it doesn't match your shoes, it's fine as long as it complements a color you're wearing. Navy blazer or navy tie and a navy leather band? Cool.

I have always held grey (any kind of band) apart from all others because grey is so neutral, and have felt that a grey band goes with literally everything.

What say you? Am I nuts?