I saw a multicolored pulsing cluster of lights. Pulsing off gone. Pulsing on amid the sparkling colors very distinct triangl all 3 side

I went out to my front yard to water plants at about 9pm. Something caught my eye and I looked up. What I observed was light. It was pulsing on and off, nearly directly overhead, and moving to the SW. It was not a single light but more like a cluster of many different lights and colors. The brightness varies as it pulsed on. Pulsing off it disappears completely. And when it pulsed on there was a very distinct triangle. All 3 edges were very clear as if it must be a solid object. However nothing of the object itself is observed except for the edge. The on and off occurs many times as the lights keep moving at a leisurely pace. The triangle appears several times, but at least one time the triangle was replaced by a rectangle with again only the edges visible. So it seemed the hidden object was capable of changing shape. Just as I thought it was about to move beyond my field of view the lights made a hard left turn moving back to where I had a clear look. There are many large trees where I live so I can only clearly see a limited part of the sky. The lights made a single loop to my east and.then returned to the orginal heading. And was gone from view. I could cover the triangle completely by holding my thumb above my head at arms length. So unless it's a tiny object it's probably pretty high up. No noise at all. And the movement was odd. Hard to describe but it seemed almost that it was sliding not flying. And then to my amazement it returned again. I had originally observed the lights from my front yard. For the 2nd sighting I was on my back deck. As I'm looking basically south it emerges from behind trees to my right. I've grabbed some binoculars and I'm trying to get a better look at it, when it's just gone. But in an instant I realized it's now all the way off to my left. To achieve that new position in a fraction of a second it has to have been nearly instantaneous travel. Trees to my left made viewing difficult. But I don't think it was at that spot for more than a few seconds. The trees made it hard to see exactly when and in what direction it went. Throughout the event the lights kept pulsing, and the intensity varied. And every time it pulsed off it was completely invisible. So at each off pulse I'm wondering where it will reappear having kept moving while invisible.