A Metacity/Mutter theme based on the ACID suite
Download the GNOME-Shell theme here
-20 August 2014:
Window decorations are now fully drawn, and only use pixmaps for icons if this is unsupported. This means you can change the colours from the metacity-theme-2.xml theme file easily.
Theme now reads the current GTK theme's suggested window border colours before applying the default ones (only works on some GTK themes).
If you like my work, feel free to send me a buck