What Hans said! And puts me right in mind of the paintings of Rothko. Which is a good thing. I rarely like abstract pictures that at so abstract, I really can't figure out what they are... but you've made this work.
Thanks,
Oh I like Rothko. The trouble in photography is it has to be an image of something. Painters have no trouble here. The superposition I suppose is the effect of form has on the primitive mind.