Traveling north west on marina drive toward second street, I noticed a blue/red light that was moving oddly. I asked my wife to look at it and asked her if it looked weird. It was obvious when we came to the stop light @ marina and second street, that it wasn’t flying normal. It was emitting a red, then blue light and then nothing for about 3 seconds. I have been a fan of aircraft for as long as I can remember and I have never seen an object in the sky maneuver like this one. It would raise then swiftly move to the right and then kinda of circle eight and then go in the opposite position. There was low cloud cover and it seemed to be nearly at the clouds height. My wife actually said “Hi alien” and the guy at the light next to us heard her and laughed, as he had been observing it as well while we were waiting at the light. I am 100% this was not a helicopter. It was a solitary light source that changed from red to blue to nothing about every 5-10 seconds. I hope others see these and post.