Actually, TPIR has had several different sets of lights behind the curtains over the years. The first lights were added in January 1985, but were more subtle compared to future iterations. These lights disappeared in late 1987 or early 1988 when the curved curtains (along with an extra ninth green curtain) arrived, but reappeared again in the spring of 1990 with new, brighter white lights. Then came the short-lived silver curtains used for the 25th anniversary, with its own set of lights. Because these extra lights were hot, it was important to turn them off after taping, and when the staff forgot to do so, the curtains got damaged, so the previous curtains returned. As the CBS Eye curtains were being phased out for more curtains (originally red-green-blue-yellow), more lights were added around the audience. When Drew became the host, the curtains/lights were replaced again.