Paint dining room walls white or neutral with a bright accent wall, such as a rich red. Or, choose a modern color for the entire room such as cool gray or lime green. A large, abstract painting can serve as the focal point for your modern dining room. Other options for wall hangings include floating shelves or frames in which to display china or other collectibles. Remember, the bottom line in modern design is minimalism, so avoid hanging too many objects on the walls and keep the attention on one dramatic focal point. To complete the look, choose simple window treatments such as sheer, flowing white curtains or clean roman blinds.