Black and white collocation is the simplest but most classic collocation method. There was a 30-year-old male friend who was black, white and gray all the year round. The simple but uncomfortable combination attracted the attention of many opposite sex around us. Black and white is a classic way to match clothes. If you wear a black western-style white shirt, you will be killed by most women. According to many surveys and analyses, more than 80% of women like men in suits, so there is no hurry to put a black and white classic in the closet.