 It is based upon the concept that color can affect the observer in various ways, and combines this with standard learning of basic notation.Viewing color has been widely shown to change an individual's emotional state and stimulate neurons.The Lüscher color test observes from experiments that when individuals are required to contemplate pure red for varying lengths of time, [the experiments] have shown that this color decidedly has a stimulating effect on the nervous system; blood pressure increases, and respiration rate and heart rate both increase.