Dark mullions

Dark mullions are so beautiful. Here, the windows are original and the mullions and frames are painted black on the outside. It's a great look. If I were replacing all the windows in a house I would definitely consider using the colored aluminum-clad outside mullions. They will never need paint and they present a look that is both old-world and contemporary. I have seen them in red, green, and black. They are so much more interesting than white.

Above is another old house with black mullions in Bennington, Vermont.