we were camping at lake Comanche on the north shore when we witness this object with multi-colored lights Red Blue and white flashing both vertically and horizontally and around the object. it was about 500 ft. off the ground and you could here a prop engine hum but it did not look like a plane or a blimp. I look at it with binoculars and it clearly wasnt recognizable. There was at least 12 of us that saw it over head. And it was follow by the sheriff look for a fugitive in another camp site 40 min after it happened. Thought it might have been a drone.