Paint your tray ceiling a color different from the walls. This will make a big impression; your tray will stand out the moment someone comes in the room. If you have a light neutral palette on the room's walls, adding even a slightly bright, contrasting color to your tray will bring attention to it. Light hues can be relaxing and are perfect for kitchens and bedrooms. For example, blues and greens in soft tones will add to the calm feel in a kitchen or bedroom. Add Sherwin Williams 'Upward' (SW 6239) to make it feel like the sky is above you. Deeper, bolder shades on your tray ceiling will create dramatic contrast from your wall color, which is great for gathering spaces like dining rooms, entryways and living rooms.