What most naturally follows?

How to paint interior window trim
Decide on a paint color and amount for your interior trim.
The color of the paint that you choose is up to you. It's common to paint interior window trim white, although some people choose to match the trim to the color of the wall, or to paint the trim a contrasting color to draw attention.
For example, if you have white walls, you could paint your trim red for a splash of color. Don't be afraid to ask the sales staff at your local paint store for help.