Pink-dr. alexander schauss, ph.d., director of the american institute for biosocial research in tacoma washington, reported that when prison cells were painted pink, it reduced aggressive behavior among prisoners. even if a person tries to be angry or aggressive in the presence of pink, he cant. the heart muscles cant race fast enough. its a tranquilizing color that saps your energy. even the color-blind are tranquilized by pink rooms, according to dr. schauss. such a effect, unfortunately however, was short-lived as later studies would show. it appears that once the body returns to a state of equilibrium, a prisoner may regress to an even more agitated state. fhttps://psychology.about.com/