Firework type of formation hovering south of Pike's Peak

I noticed the formation when I was driving home, South on Nevada. It caught my eye because I thought it was a firework, but then it never went away.  I was astonished, you could say, maybe confused, so I kept driving straight for about another 15 minutes to see if I could get closer to what I was seeing.  Trees eventually got in the way of my view, but as I was heading back, North on Nevada, I could see the formation in my side view mirror the entire way home. I live on a bit of a hill, so I have a view of it from my window. My window view is facing the Mountain Range.  I am seeing the formation South of Pikes Peak. It looks like a firework, a bunch of shimmering lights in a circle, but none in the middle.  The lights are pulsing, it seems like there is a rhythm.  They are colored red and white.  It seems too low for any government aircraft to be hovering.  I could email a few-second video I took.