Research into colour and mood
Extensive research has shown that colour can affect the mood. In 1973, US researchers found that bathing in red light for 30 minutes caused blood pressure and heart-rate to rise, while blue light caused them to decrease.
Stimulating and calming colours...
In 1984, Professor Harry Wohlfarth of the University of Edmonton, demonstrated that yellow and red are the most stimulating colours. Yellow was found to increase children’s learning ability (in other studies yellow, orange or red in a classroom has been shown to increase student IQ’s). He also demonstrated that blue and black are the most calming colours.
Luscher colour tests
The Swiss psychologist Dr Max Luscher devised tests using colour to reveal subjects’ state of mind and even physical illness. Furthermore according to studies from the National Institute of Mental Health in the U.S; there is “growing evidence that exposure to certain intensities of light at particular times of the day and for certain durations can cure some kinds of insomnia, make night workers more productive, and improve the body’s immune functions”.
NASA
Research by the National Aeronautics and Space Administration (NASA) has found that a “light therapy regimen works better than sleeping pills in helping astronauts rest during the day and stay alert at night.