In order to make the right choice on your own, you must either be a professional designer and know the patterns of combination of colors in the interior styles, or have a natural aesthetic taste. Without special knowledge, it can be difficult to make the final choice in favor of a particular palette.
It is in solving this issue that designers will come to your aid. They will offer you not too many options for combining a window with a palette of the interior of your home, and the final choice will, of course, be yours.