Emilio Gomariz's colorful artwork made with Mac OS X Finder
Emilio Gomariz's 2009 project called Macintosh Lab consists of digital artwork he has made using Mac OS X's shortcut keys (specifically the screengrab keyboard shortcut). The images are quite beautiful in their composition and if you're down with filling your screen with rainbows, you won't be disappointed here.
You can see more of his creations here from the same series. Those colored folder labels do come in handy!