yellow is a bright and happy color that represents the sun.
this color is quite charming, and because seeing it can make people happy and light-hearted, it can be used in casting spells or performing rituals that involve subtle persuasion. it is the color of happiness, cheerfulness, and fun but also of the mind and intellect.
still, a color with such an impactful spirit can have negative traits as well -- just like everything in our world. yellow can induce anxiety and distress and can cause people to be over-critical.
yellow is connected to the third chakra. it can be used to improve mental balance as people with well-developed solar plexus chakra are more likely to be strong-willed, confident, and disciplined.