Bob here's a thought, how about a frame either black background, and white text, or the black text against a white background. No other graphics. The text defines the shape. I think it would be smashing.
Well, I've tried playing with it, and a simple border seems to do something for it, but reversing the colors didn't seem to work out.
I think it's probably best to let it stand, but you can play with it if you want to, it's your lair.