Combining red with other colors, it should be remembered that red can't be in harmony with blue and black, which are the symbols of Feng Shui water element.
Being the color of activeness and power, red may become a great Feng Shui tool for attracting wealth, money, and luck in financial affairs. However, since it is a very powerful color, too much of red may, on the contrary, negatively influence an individual. Therefore, use red carefully, just to highlight certain areas of the room.
Too, Lilian. Feng Shui Symbols of Good Fortune. Konsep Lagenda Sdn. Bhd, 2007.