Based on imetal by SkiesofAzel.
This is a part of the Mac4Lin version 0.4. If you want the whole package then head over to: http://sourceforge.net/projects/mac4lin
The complementary Mac4Lin ver.0.4 Emerald theme for Beryl/Compiz can be downloaded from here: http://www.gnome-look.org/content/show.php/Mac4Lin+ver.0.4+Emerald+Theme?content=71995
The MacMenu GTK Metacity theme is experimental. Kindly report bugs to my mail id at firstname.lastname@example.org