Simple and black metacity theme. If your display brightness is not too dark the buttons will hopefully look like they are sunk into the bar.
I created this one a while back and I got used to referring to it as "midnight". Today, uploading the theme here for sharing, I searched and found a midnight GTK theme, so I've added the "at Metacity" to the name. If I come up with a better name I'll change it in a future update.
Enjoy. Comments are always welcome (good or bad, of course)