Interior designer Jennifer Ott writes at Houzz, It'standard operating procedure to paint your walls a color while keeping the ceiling white. We've been told this makes the room feel larger and brighter. While there's no doubt a white ceiling will brighten a room, certain ceiling colors can actually make a room appear more expansive. The key to using a bold or dark color on the ceiling without the space becoming cave-like is to make sure you have adequate lighting or limit the adjacent wall colors to white or another light hue."
Two ceilings that wow me: