Abstract traditional patterns and colors can provide great inspiration. Greek key patterns, Mayan zigzags, Indian paisleys, Moorish trellises — the world is your oyster. And you don't have to rely on your own wobbly hand: Stencils are available for many traditional patterns.
Colorful and ornately layer sitting room. Can be easily adapted to a cleaner, modern look with use of softer wall color and fabric while keeping bold ceiling.