I was leaving work when I notice an object in the air that had a red light, blue light and a strobe/pulsating white light. We do have airports around so my first thought was an airplane with a weird strobe light on it. As I was heading towards it, it seem to be lower in the sky and hovered next to the park about 50 feet from me and 25 to 30 feet above land. I stopped my vehicle to get a better look. It was disk shaped and there was no sound coming from it. It seemed like a prob of some sort.I was excited to finally see something I could not explain, but almost didn't believe what I was seeing. I got out of my vehicle to get a better look and to take a picture, but when I exited my vehicle, it took off. It was going about 35 to 40 mph. Heading northwest. I watched it for another couple of minute when I lost sight of it.