Object in the sky, flickering spectrum of colours, maintaining general position but darting back and forth impossibly fast

My girl friend observed a flickering light in the sky, it was showing several different colours intermittently. The object was seemed to be saying in the same general place although it appeared far off, but was darting In different directions akin to the way a humming bird moves. It was moving far too fast and irregularly to be any conventional air craft, and was stopping with no inertia. The craft was also completely silent.
My girl friend and I observed it for about 10 minutes with no major noticeable change in behaviour. I have had a similar experience in this same location years ago, and I am beginning to think it has something to do with the Buddhist temple that has been under construction for over a decade now.
I have long suspected that the Buddhist temple, which is to be the largest in North America, and is fully funded by Chinese enterprises, may have ulterior motives. It has never been open to the public excluding a few choice showings that brought people in with Chinese coach busses.
I don’t think this was extra terrestrial, I think it was man made, and potentially related to this “temple”.