The most difficult choice comes when used cups or mugs are in need of matching saucers that can’t be found. In these cases, a simple white or black saucer is usually the best choice, although any plain-colored saucer that matches your cups can be used. You may also want to consider serving mismatching cups and saucers. This is becoming a popular style at many coffee- and tea-houses where perfectly matching drinkware is deemed not only unnecessary, but also uninteresting.