Blue, purple, gray, white, these four colors represent what the significance of

Blue: pure, by the sea association: broad-minded, unrestrained

Purple: purple represents noble, often become the color of the aristocracy. Purple in Christianity, representing the meaning of grief. Purple also represents boldness and courage. Hidden, melancholy, noble, mysterious, deep, mature, romantic

Gray: sadness, depression, frustration, and so on!

White: In the West, especially in Europe and America, white is the color of the wedding gift eye, indicating the purity and steadfastness of love (also said to be God's favorite color). However, in the East, white is used as a mourning color. White is not a cold color, nor is it a warm color. In Han Chinese culture, the color white is associated with death and mourning, such as "red and white wedding" in "white" refers to mourning (funeral). Today, at Chinese funerals, relatives and friends of the deceased usually wear black veils on their arms and white flowers on their lapels to express their condolences and respect for their dead relatives. It also symbolizes failure, stupidity, no profit, such as in war, the losing side is always playing the "white flag" to indicate surrender; called the intellectually inferior people "idiots"; the effort but no benefit or no effect is called "white busy ", "waste of effort", "white work" and so on. It also symbolizes evil, sinister, such as "white face" traitor. It also symbolizes the knowledge of shallow, no merit, "white" in feudal society is "the color of the common people", called the common people for "white Ding", "white clothes The color "white" was the "color of common people" in feudal society, and the common people were called "white men", "white clothes" and "white bodies". Literati who lacked exercise and experience were called "white-faced scholars". In traditional theater, the white face denotes insidiousness and treachery, and doing something that offends people is compared to "singing the white face". During the Chinese Democratic Revolution, the frantic suppression of the revolution by the reactionary forces was called "White Terror". If you are unwelcome by others, you will say " 遭到某某人的白眼"; unrepressed injustice, poor and blank.