Here is the desktop and an example of the way the windows appears for my main desktop machine. Here is the desktop and window for my media box.

I've come to realize that I'm fairly happy with Gnome as a desktop. It's so much better than it used to be.

My desktop machine's appearance doesn't change far too often. Maybe every four months or so. My media box's appearance changes quite often. Before my current set up, I had a cool theme in place made to look like PlayStation buttons. Media box's background changes probably every one to two weeks.