Please, can you tell me what is the bright "star" in my western/southern sky that has so many...

colors. I live in Niagara Falls, NY and have been watching this thing for awhile. Have read too many opinions about what it is. I'm hoping you'll know for sure. It seems to be kind of triangular shaped and has red, blue and green in it. I"ve seen it changing shape/colors so it appears to be moving. Thank you for your help. pamluc45@yahoo.com

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