On Friday, July 7th, 2017, 21:55 MST, we saw one round object hoovering around the antenna tower on Mnt. Morrison between Interstate 70 and Road 74 – West of C-470. It was changing shape and colors. The shapes were changing from circle, to oval and at one time it changed and looked like a big cross. The colors were changing from flashing bright light, to green, blue and red. At one time it appeared to be standing still or landed and than it started flying again towards Green Mountain location and coming back and later flying above Denver to the East. In the last few minutes it was joined by 2 similar objects, which disappeared shortly after.