Well, I ended up going with neither option. I decided the two ideas I showed yesterday both had too much going on and went with a much simpler composition.
Now I am not so happy with the colors I chose. I wish I had used something warmer. I will be playing with this idea some more. Perhaps this is only one of a series of "landmarks".
The actual piece, by the way, does not include the black background, but my plan is to mount this on a stretcher covered with black fabric.