My girlfriend and I spotted multiple orbs, possibly triangular shaped, UFO's while driving South on I25, North of Fort Collins, CO. We were in Weld County but I believe the crafts to be over either Greeley, CO or Easton, CO area. We couldn't tell exactly as we didn't have any way of telling how far away from us they actually were. I looked on a map when we got home and speculated on the area based on the general direction from where we were. Regardless, as we were driving we spotted multiple orbs in the sky. They appeared to be emanating multiple colors like red, yellow, and green. One stood still hovering, while several others would come and go towards it. They all would shine very bright at times and then instantaneously go dim, vanishing without a trace, until they would re-appear not far from their original locations. We noticed this activity from around 6:30PM until about 8:00PM, at which time they all just vanished. I have pictures and video, however, they aren't of the greatest quality as they were taken on an iPhone.