What is the preoccupation of the color of the book plaque

Preoccupation with yellow or black as the main color. Shujai is what we now often call the study, specializing in book storage book place, as well as used for calligraphy and painting place. The use of yellow plaque symbolizes warmth, light, lively, happy, a metaphor for reading can make a person in a happy mood. The use of black symbolizes solemn, mysterious, stable, dark tones to create a quiet atmosphere, just reflecting the meaning of the study quiet place.