The Colgate-Palmolive Co., New York City, is sponsoring the Colgate Simply White Style Makeover Sweepstakes. Through Dec. 15, consumers can register at colgatesimplywhite.com for a chance to win a trip to two to New York City for a private consultation with style specialist Kim Johnson Gross and $2,500 in spending money for a new wardrobe, makeup and accessories. David C. Tintle & Associates, East Rutherford, NJ, handles.