We have a thing for black steel window frames. You might think they only suit an industrial look but they work with a variety of styles including the more traditional. They work with most colours and the thin black frame does not compete but rather complements so that when you look at the windows your eye is taken through to the view beyond. They are also now being used internally as room dividers, shower screens and in walk in wardrobes.
They have such character and look great. Here are some ideas.
Image by heidi lerkenfledt photography