Why did Alice Walker name her book the color purple?

The title of the book is a very important symbol. Celie goes through life having a hard time noticing the beautiful aspects and appreciating them. She had a difficult life and was abused as an adolescent. "The color purple is continually equated with suffering and pain. Sofia's swollen, beaten face is described as the color of 'eggplant'. Purple is the color of Celie's private parts: the site of her sexual violation. However, later Shug points out to her that life must be enjoyed. When they were in a field of purple flowers, Shug tells Celie to look at the flowers and embrace their beauty. "You must look at all the good and acknowledge them because God placed them all on earth". After learning this, Celie has a better respect for life and everything it has to offer.