Food names with three characters for color include cucumber, white rice, and black sesame. The color names are as follows: violet, grape purple, lemon yellow, apple green, pearl white, matte black, bright sea blue, bright pink...etc. Color is a visual effect produced by our human body and brain on light. The different colors we see in our eyes are formed through the influence of electromagnetic waves of different frequencies. However, sometimes people also think that substances can produce different colors. The physical property is directly called color.