Around 8:58pm in Northern San Juan Capistrano area. A clear night, 52 degress. Overlooking the hills from north san juan towards dana point. I saw a silent object about a mile south hovering over beyond a hill with red and blue lights. Could not make out the shape. But it was silent. It had a spot light like a helicopter. But it was swaying the spot light around in circles slowly. Going clockwise, then counter clockwise, clockwise then counter again. The spotlight was so bright that it illuminated the entire hill. For about a minute. But no noise from the object. It seemed like very unusal activity for a helicopter if it was one. But then again, it was silent.