While there is only a hint of orange in the wood, the circles are fairly prominent.
The image below was shot with my cell phone in the de Cordova Museum Sculpture Garden in Lincoln, MA. Shown here is only a portion of the unusual structure, entitled Lincoln, which must be about 100 feet in length. It is set up on a hillside, and kids love to crawl/walk in and out the openings. Here you can see a small child in the background, which helps give scale to the sculpture.
The next image was shot in a laundromat. I couldn't believe my good fortune when I looked through the window and saw the line of machines.