Happy, bright, uplifting and optimistic, the colour of the sun itself, yellow helps clarify the mind, stimulate the nervous system. It also is the colour that is correlated to the spleen in Traditional Chinese Medicine and if you are weak in spleen energy it is suggested that you use yellow to strengthen it. It also aids in discernment, decision making and using good judgement. Yellow also aids in communication, sharing and self-expression. Need to stay awake and study for an exam? Try a burst of yellow colour on your desk like a bunch of yellow tulips, or a painting in a variety of hues of yellow to help sharpen your memory and increase alertness.