We saw two balls of light aimed at each other and after they passed each other one dissappeared, the other stayed and changed colors.As me and my boyfriend were driving down the road we spotted two balls of light in the Southwest sky. We decided to follow it and came to a clearing, when we got to this spot they were both now in the Southeast sky. We continued to watch them and all the sudden they just started moving towards each other almost like they were going to collide with one another. They got so close to each other that we could only see one ball of light as they were passing each other. After they had passed each other, the one moving to the left all the sudden just dissappeared, it was there and then it started moving fast and then gone. The one moving the other way kept moving and all the sudden just stopped. It seemed as though it was circling a specific area and while it was doing this it would lift up and then drop and then move left or right. When we could just see the one it was changing colors from red to white to an almost glowing blue/green and it looked like it was spinning. We watched it for about 15-20 minutes and it just stayed in the same spot not moving anywhere, just lifing, decending, moving right/left and changing colors. We could not believe what we were seeing as we had never seen anything like it before. It couldn't have been a plane because planes do not look like they are going to collide and planes don't stay one spot for this long. We were in awe.