See I was trying to figure the same thing, one waistcoats a couple different jacket colors. I figured on the black, seemed it would good with pretty much anything even green or gray, and go as well on it own.

I wonder about ther style and cut though, those look the type you would see with Edwadian trousers????

Wear what you like, and like what you wear!

My two cents, and that is thier exact worth