By Lynn Beresford Super Vision International Inc. THEN: 1994 Sales: $2.4 million Brett Kingstone doesn’t take business lightly. In 1994, his fiber-optic light and cable manufacturing company was doing $2.4 million in sales–but Kingstone still didn’t consider it a shining success. Why? He knew Orlando, Florida-based Super Vision International could do much more. Fiber-optic lighting offers so many advantages over …