Here is a nice Theme based on the MAC OS X look and feel. Theme and Icons by N.Design Studio , columnized by MangoOrange. The i3theme comes in three versions all of which are 3 column layouts. The 3 versions are left, centered or right versions.
This Theme is all about visual experience and ease of use. i3Theme is also widget enabled and very clean. The sidebars are expandable and collapsible to get rid of anything your users don’t need cluttering up their browser. This is a nice feature and one that sets this Theme above the rest.
Author: N.Design Studio , columnized by MangoOrange
Demo: http://i3theme.mangoorange.com/
Download: Click here
Widget Ready: YES