Paint Bay Window Different Color . Even black feels like a colorful choice for window frames when paired with a. The window frames should be the color of your trim.it looks as if your trim may be white. Living Room Part 2 Bay Window follow your heart woodworking from followyourheartwoodworking.ca Whether you want a way to block out light in front of your bay window workspace or reading nook or just want to add a bit of extra interest to your window. Except, of course, at night, when the bay will be emphasized. Choosing which color to paint your classic vw bay window bus is a big deal.