Ralph Lauren adds a twist to the nautical look by tying a polka dot scarf over the striped polo and wool flannel pants. Escada mixes patterns of equal strength, the floral sweater and scarf contrasting with the check pants. Create your own color blocks in easy pieces — soft and fluid sportswear separates — from Anne Klein. Color blocking extends to footwear. Pumps in bright com- bos as well as black and white, from Roberto Gil. SPRING '89 55