Colours changing. Bright in sky. Turquoise,red white,,yellow,green

It would move left to right up and down and could hover. Definitely not an helicopter. Definitely not a plane. No beams to show searching. It a clear night. Can hear noise of traffic passing but nothing from object. I had been going for over an hour and a half. I seen planes passing as well as train on the ground. One of the times when it stationary it lasted approx 20 minutes. Most of time though it moves continuously apart from a few minutes of hovering.