A painter’s trick to cozy rooms is painting walls and trim the same earthy tone but bumping trim to a satin sheen. This subtle sheen contrast wraps the room visually and adds depth without dramatic color changes. For fall 2025, using olive or similar warm tones in this manner creates a restful, enveloping atmosphere. Adjust sheen thoughtfully to highlight architectural details while emphasizing layered textures that support the season's cozy design ethos.