I saw an orange reddish light just above the West hills in Portland. I grabbed a pair of binoculars and I looked at it. I looked away for a second and it was gone. About 15 minutes later The light came back. I grabbed the binoculars again and looked at it for about 2 minutes and it turned to a blue color and disappeared. Almost like the light collapsed in on itself. I know planes and helicopters look like at night. I know what stars look like. This was nothing that was explainable.