A couple people asked how I did this, so I will now tell you. :-)
For the colored lights I used (*drumroll...*) colored lights. A blue one on the right and red one on the left. The lights refract through the water in the glass making the wing-y things on the background (a piece of white posterboard), and the shadows are colored by the closer lights.
The white light was done using a flashlight pointed downwards into the glass and on the posterboard backdrop, and I moved the flashlight around some during the 15 second exposure to smooth the lighting out. The whole setup was improvised not pre-planned--I kept playing around with lots of different things, and this was the most interesting.
As always, thanks for the comments. :-)
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The combination of shapes and colors give this an interesting kind of abstraction that draws the eye. I'm not sure about the "coloring" of the "contents" of the glass - it's kind of ghostly-eerie looking, but in it's own way adds to the the abstract feel. The centered composition feels a bit static, but overall I find the photo interesting.
I like the graphic quality of this image. I really like the two shafts of colored light on either side of the glass. The neutral gray tone of the glass does not work well for me. It seems a bit dull to me. I think a bit of dodging of the glass to lighten its color would have made this interesting image even better.
Really, really neat setup! With such strict symmetry, the only nitpicks would be the reflections on the glass itself. Also there seems to be a weird mottled-ness to the blue background- I think it's there in the red side too, but it's harder to tell.