What is black all around?

My computer has no life unless it is turned on. It doesn't have flashing colors, just black with white letters, symbols and numbers on the keys and one blue eye to let me know that I am online. I can't imagine anyone finding a black box exciting enough to take photos of. But, here is my image showing the underbelly grill over the fan and the superimposed pattern of decorative silver rings from the top of my computer.