It’s a series of lights that would always go back to being a triangle.

Me and my dad were out back putting caulk on the house when I saw a strange series of lights just under the clouds. It was going faster then the stars we could see but my dad still thought it/they were stars but they were going from white to purple then very light green. It was moving in a motion that made it look like it was tumbling through the sky and would always go to a triangle formation. This encounter unnerved me and made me feel like I was going to be taken away.