Oh, yes, that has happened to me, too. My daughter was a keeper for her soccer team and had a black, green, red, kind of checkered shirt. At one game, she was standing in the shade waiting for half time to end. My husband pointed to her and said,"There she is!" when I asked if he knew where she was. That shirt and her dark shorts and socks completely disappeared in the shade of the trees. That gives new meaning to the quilting term, "Blenders".