MAKE MINE MODULAR on how to use the 50 pieces in its collection. Also on hand are pamphlets showing how to combine various pieces to make different outfits. Although the number of outfits are limited only by the number of pieces and colors used, the founda- tion for a Units wardrobe, according to spokeswoman Cynthia Sutton, is skirt, cowl, slacks and skort (a shorts/skirt combination), topped by a jacket in a complementary color. Add six additional pieces and a woman can create over 50 different looks for only $222. "Originally there were only 20 different pieces," says Sutton. "Now there are over 50 because people wanted different looks. We don't dictate to the customer, she dictates to us." This season, Units has intro- duced a long, "pyramid"-style jacket and longer circle skirt. The new drape-wrap top, says Sutton, is the direct result of customer requests. Sophisticated Dressing from Idkm 29499 Northwestern Hwy. Southfield, MI 352-2530 76 IN STYLE Units has stores at Twelve Oaks and Fairlane. Multiples can be found at Coats Unlimited, Hudson's and for children at Peanuts and Gould's. Available in basic colors throughout the year, Multiples and Units modular clothing frees women from wearing only "this year's colors." To the standard white, red, black, navy and ecru, this spring Units has added bold colors like geranium, poppy, jasmine and hyacinth. Multiples has added '60s colors like shocking pink, electric blue, lime green and valencia orange to its standard black, white and red pieces. All seasonal colors are selected to be mixed and matched with those of seasons past. Jill Bace of Multiples says it is the ability to mix and match not only colors but components that make modular dressing ideal for the busy traveler. Multiples are made of 50/50 cotton-poly blend; Units are