The darkness or lightness of color used attracts attention, so use contrast carefully, perhaps to highlight something special. Blend into the background items that should not stand out. This is a useful way of dealing with furniture or room features you don't like or with bulky furniture that seems to take up too much space. The room itself Consider orientation, architectural problems and assets, size and proportion, and architectural materials. People tend to be sensitive to overly warm or cool effects.
Color modifies the coolness of northern light and the warmth created by a southern exposure.
Use warm colors and warm neutrals for northern rooms or rooms shaded by trees. Cooler colors and cool neutrals lower the visual temperature in rooms receiving sunlight. If a room has poor natural light and tends to be dark, use light to medium colors. Light colors make the best use of natural and artificial light by reflecting it back into the room. Dark colors absorb light, so the darker the colors the more artificial light you'll need.