None the less I do enjoy this piece, its very vibrant and striking, it just does not immediately come out as Glass to me. 

Perhaps more light/white shines to indicate glass. It looks more like a hologram or TV thing to me as it is now. Glass does not have to be all colors, onyl if light is passing through a prism or clear glass just right does it make a rainbow, but its typically not on the glass itself only whatever is behind/through the glass.