The relationship of colors should be considered since they affect the mood. Colors that relate are considerate if your house is an open floor like with no divisions between the dining and the receiving room while the rooms that are separated by wall may not need matching colors.

Cool colors like purple, green and blue make your room look greater and they represent serenity while warm colors like red, orange and yellow reduce the size of a room and they represent a cozy feeling.

Neighboring colors create harmony like warm and cool while opposite colors reflects drama like a combination of orange and blue or black and white. The characteristic use of colors defines a human mood and this is a fact.