Incorporate natural light when possible. No other kind of light does more to help your art look its best. Just be sure that the glass on the frames will protect from the work from UV rays, otherwise your pieces may fade.
Layered mats create an interesting look for black-and-white art, too. Tie in the bottom mat color with the frame color (black if using a black frame, gray or silver if using a silver frame, etc.), then use a nice light neutral on top for a clean, contemporary feel.
... or display your art collection. Your only limitation when it comes to art: Make sure it is detailed enough so no one has to step back to admire it.