u.f.o sighting over saginaw Michigan

I let the dogs out at 12:05 a.m. July 29, 2015. I looked up to see the stars and saw a blinking what i thought was a star in the sky changing colors red, blue, green, and yellow .It was way up in the sky at a distance. I went in the house and I woke my other half up to see the star and we got some binoculars out to see better. To the both of use we said it looked like a round orb in the sky. We looked at a few other stars in the sky and this orb was different than the rest of the stars. None of them changed colors and we have never seen a star ever change colors like this did. soon the orb moved very slowly to the right, then it went to the left very slowly, then in moved down a bit in the sky. We both came in soon after it moved down in the sky. Our necks were hurting from looking up so long. We had no camera to take a picture of it and I tried to look it up on computer and found nothing.