Muted greens are trending this year for good reason - they're beautiful. Paired here with white it lets the green stand out.
Bring in a bit of gray/taupe for a warm, earthy vibe.
Highlighting trim work in a shade darker than your walls showcases the craftsmanship.
Using a dark color on a wall in an adjoining room will draw the eye in.
Yellow is difficult to get right on painted walls. This is an excellent example of yellow that isn't jarring!
Revere Pewter is a great neutral and a staple among interior designers.