Here's the ebuild for an awesome Icon Theme called IcOsX, an extraction of the best icons from OS X I found here: http://www.kde-look.org/content/show.php?content=2242
Created attachment 3689 [details] icosx-3.0_beta.ebuild
Closing - I've put this up on the KDE web page at dev.gentoo.org/~caleb/kde.html