Taking trash can out. notice this glowing light in sw sky. got binoculars out then small telescope. in telescope could see red on bottom white to yellow in middle then green to blue on top. thought it could be a drone ppl buy and fly but noticed it had no flashing lights and was so stable. watched it for 20 minutes expecting to see it go down because drones have limited flight time and also noticed it was moving away from us and getting smaller.Roof tops started getting in the way so we drove to better spot to continue watching. it finally moved so far away we lost on the horizon moving to fort worth. this object appeared to change shapes from a sphere to triangle all while changing color red being most dominant. could see the layers of color as being described before. was not a plane or drone. was interesting to see and could not believe how long we watched it