One of my early kalidescope stained glass
I went by a ladys office to pick her up for a meeting and saw one of my early stained glass projects hanging in her window, that I had forgotten I had given her years ago. I was at that time interested in trying to make 3-D effects on flat glass using colors. The question with this one was: Do you see 4 blue cubes with light blue tops or do you see 4 blue cubes with striped clear tops. Or both.