3 hr sighting of 2 lights moving around each other and changing color in southern sky outside of Saskatoon.My friend and I decided to drive out to Cranberry Flats to sit in the parking lot and tell ghost stories since we had no halloween party to attend this year. We turned south towards Cranberry Flats when I saw two very dark objects speed over us. I ignored them, thought they were birds (maybe they were). Then I started noticing streams of light going over the road, at first they looked like falling stars and kept going from left to right. Then they starting sort of going back and forth, like two of them swirling, but I rationalized it as the reflection of our headlights against power lines. They also kept changing colour, the ones we noticed were purple, green, orange, blue, yellow, and white. I should also say they started out very thin, and slowly swelled up into the size of large ovals. The further we got to Cranberry Flats, the brighter they got, two white ovals slowly circling each other. At this point I was trying to rationalize it as spotlights. Neither my friend or I were saying anything to each other, I didn't want to say something in case I was totally hallucinating, and I didn't mind it if I was hallucinating. Anyway, the further out of town we get the brighter it is. Total silence, we miss the turn off to Cranberry Flats and she pulls into a side road to turn around to go back to the Flats. At this point I notice that the lights hovering and swirling in the sky are staying in one place. I think at this point I said to her "What are those?" "You noticed them too." We turn around and start driving back into town, neither of us wants to look back. This time back into town I realize: There are no power lines going across the road. They are all along the side of the road. We're starting to compare notes and realizing we've seen exactly the same thing. Both of us are terrified. Then my friend stops along the roadside to get out and see if they're still there, and they are, so she freaks out and jumps into the car. We keep driving until the turn off going east, and we look back and they are still there, still glowing white ovals. We're finally in town, I'm still freaked out, and we go to Diefenbaker to see if we can see them from there. Sure enough, there's those two swirling lights. She drives me home and then after much debate convinces me to go out there with her again. And so I do, after MUCH reluctance. Anyway, we get back to Diefenbaker by about 11:30 and they've changed. They're still swirling, but this time they're green and acting somewhat like northern lights, just the way you see energy ripple off them. Some other people in the park seemed to be seeing them too. We drive to a couple other places in the city to see if we can see them from there, nada. Then we get some binoculars and go back out to look at them. This is about three hours after they first appeared, about 1 in the morning. This time, they're more like green ovally lights, without the nerthern-light type ripple, but they're moving COMPLETELY differently. Sometimes they swirl, sometimes they flash on and off. Sometimes they just speed past each other. Sometimes they change direction, sometimes they drive bomb, and just as we were driving away I also noticed them leap frogging and chasing each other. Also twice during our sightings they went from just a glow to a solid light. I should mention it was cloudy so they might have been in the clouds. My friend is an elementary teacher and we've known each other for 26 years.