Could do this wall pattern in guest bedroom with gold color on the green accent wall.

Painted Ceilings - no limit to your imagination; Image Source

Blue ceiling and wall bedroom. "You may have heard of painting the ceiling, but here, painting the ceiling and a single wall elevates the walls and ceiling into floating panes of color " Paint Outside the Box: 10 Unconventional Ways to Paint Your Rooms

Painted ceiling. Love how the ceiling color drips down onto one accent wall

Painted Ceilings {Inspiration}

Im a nut for crazy ceilings! Would paint ceiling and nook accent wall. Keep color simple royal blue to accent the white. No pattern on top of blue. Add a rug to accent color?

Wall color. Pink/white stripe on ceiling

21 Awesome Pink Girl Bedroom Ideas - pink ceiling and neutral walls. Love these beds with built ins for girls room

Mur blanc + plafond coloré

Want to keep a hallway white without it looking too sterile? Consider only painting the ceiling! Behr Youthful Coral ceiling with Behr Dolphin Fin walls - I like this unexpected ceiling color - fun and soft!

Infuse your bedroom with sparkling, magical, twinkling fairy lights. String the Christmas lights across your ceiling and enjoy!

Twinkle Lights in Kids Rooms. Love the color of the walls and lights in the vaulted ceiling! Who says twinkle lights are just for kids?