Tray Ceiling
use entirely different color on tray ceiling. Color coordinates with other accent??/Paint your tray ceiling and room ceiling the same color and paint walls a different color. If your tray runs through most of the ceiling, consider painting the entire ceiling the same color, using crisp white moldings to differentiate angles. This creates an architecturally pleasing focal poin
Decorate with moldings. For greater impact add moldings to your tray ceiling in an interesting pattern (you might need to hire an experienced contractor for this). Moldings are available in many shapes and patterns, and you can use a great assortment of pre-primed panel moldings and corners to create boxes, rectangles and patterns; there are even arched pieces available that can be used to create rings.
White woodwork
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