These are too structured to be natural but I liked the symmetry.
The wallpaper version is available at the preceding link.
Today's Gratitude Item: That my dad's blackberry takes really good reference photos (and that he was able to email said photos to me on the spot). It's amazing how far technology has come in a relatively short period of time. When I was small, taking photos was much more of a mission (and you could not instantly see what you 'got').