What’s interesting about black doors is that they can read both modern and classic, depending on your interior design and complementary fixtures. “Painting interior doors black is a fantastic idea for several reasons,” states interior designer Mimi Unger. “They’re timeless and offer a high-end look for minimal cost. Black doors make a statement, especially in well-lit areas with light hardwood floors.” The stained glass transom and sidelights in this elegant foyer infuse the space with warm light, beautifully illuminating the black trim.