I just thought I would post some screenshots of my macish mint theme.
As well as Include my Theme pack to achieve the same look.
MintOs Theme Pack
(you may have to manually install theme and icons).
contains my personal collection of Wallpapers.
to use snow leopard mac you will have to edit a standard theme by clicking [customize] and selecting the controls and window border as well as the fonts.
I take no credit for any of the themes even though I did mod them slightly. a few wp's are my own, the ones using the MintOs logo.
use top-bar-1024x768.png as your panel background i think it looks better,of course i'm biased as i made that one