Temperance is a ShapeShifter theme that changes the entire grahpical appearance of Mac OS X. This theme is a dark grey theme with a simple, no-frills interface. The window controls are discreet, with small color highlights. This theme is an OWC/Unsanity ShapeShifter contest
entry that you can vote for.
Version 1.2: Fixed slider bug. Updated window highlight and progress bar.
ShapeShifter 1.2 or later
*Previously available here