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. If you have selected dark wood paneling, keep furnishings as light as possible. Size of the room. Color is a major factor in making rooms appear cozy or spacious. Decide which result you wish to create.