powerful purifiers, their energy is similar to that of the sun. Increase self-confidence by fighting destructive tendencies, promoting an optimistic attitude. They awaken the upper mind, giving calm, concentration: the yellow is mental concreteness. They give energy, physically, by stimulating digestion, spleen, pancreas. On an emotional level, they give joy of life and balance. Their transparency brings warmth, clarity, concentration, activates the immune system.