Here pics of my windows with inserts. Pics are grainy because they are in the TV room where it's really dark. The finish on the inserts are darker cherry than the original trim, but actually don't match any worse than the original windows from 1972, which were stained pine. The final trim piece hasn't been installed yet, so you can see the space where the insert window fits the original frame. They needed to "float" in the frame because it wasn't square any more.
