One design idea for chair-rail moulding is painting the paneling in a slightly darker tone to the walls. This is a great look for original paneling, according to Houzz.
Another idea for the color scheme of chair-rail moulding is to select lighter and darker tones from the same paint-chip strip for above and below the rail. The color should be darker if the room has light furniture and lighter if the furniture is dark to create contrast, says This Old House.
Further ideas include a blue wall highlighted by a brown chair-rail and dark paneling, a dark brown wall with all-white panels and a beige wall with chair-rail and brown panels, notes Wish I Had That.