The color yellow is considered an emotional color. It is also believed to stimulate the brain, thereby increasing decision-making abilities. Yellow is a bright color and should evoke feelings of energy and alertness.
The color yellow is reported to create a sense of optimism and creativity. It is also reported to increase positive self-esteem, friendliness, and gregariousness.
Shades of dull yellow are believed to create a sense of fear or anxiety. Or too much yellow may decrease feelings of positive self-esteem and lead to irrationality.