Sun, Sand, Surf Beachy interiors aim to feel as refreshing and relaxing as possible. To emulate the coastal color scheme in your modern coastal design, think about sun, sand and surf; light yellows, white, beige and plenty of blues. Less is more and the lighter the better in this color scheme. To create interest, learn to play with and layer neutrals, such as white, cream and sandy tones. White walls will make the interior appear more spacious and airy as well!