My kitchen has every color under the sun since my wife used to teach cooking: white for tofu, onions, eggs, and cream cheese; red for chili, apple, and beef; orange for carrot, orange and cantaloupe; purple for cabbages and yam; green for coconuts and Chinese broccoli; beige for soba and  natto; pink for salmon and rock fish; golden brown for fry chicken and stew beacon; black for coffee and soy source etc.  Indeed my kitchen is a colorfully one.