Try Color Psychology & Color Therapy by Faber Birren, ISBN#0-8065-0651-2 I
did a paper on this in grad. school. There are quite a few studies in the
journals that address the physiological & psychological effects of color on
humans. Some of the studies showed that the physical strength &
coordination of children improved when different colors were used in the
tests.Various colors have also been tested in hospitals and nursing homes.