Mondrian added a little color to his studio to break things up a bit. In light of this recent research by Elizabeth Gould summarized by Kathy Sierra here:
Creating Passionate Users: Brain death by dull cubicle
it looks like a good idea. It also make me wonder what size a computer screen needs to be before it is considered "the environment". For years I've been thinking that a "desktop" should be about the size of a desktop. And then the question is whether a flat screen can ever replace the variety and challenge that a real three dimensional environment presents to the eye, mind and the body?
Source: http://www.2loop.com/3drooms.html
I suppose the lesson for us all is to change things around when things start getting stale. Or better yet, take a break from your enviroment once in a while by taking a walk.