I love black colored clothes. It's a classic color and very chic, the only problem is if its not cared for with care it fades. Here are two tips that I personally use...
Turn garments inside out. Washing the dark fibers in the washing machine begins to strip the color from your black clothes. By placing the garment with the inner lining outside, the outer fabric is less likely to fade during washer agitation.
Choose cold water and the gentle cycle. For machine washable clothing, select the cold water setting for black clothes. A gentle or slow washing cycle reduces the agitation speed of the washer. As a result the dark clothes do not rub together frequently and cause fading of the dark fibers. via Care-ehow