To have a complete Mac OS X look I supose you will need
Windows decorations, Widget Style, Icon Theme, Color Theme and maybe a Dockbar like tool.
As dockbar I know there are themes for Superkaramba that do this but there is also a KXDocker at kde apps. I've never tested myself. Screenshots look nice, comment does not.
All other stuff can be found at kde-look. Maybe Mosfet's High performance liquid, a widget style and color theme, is not there. In fact I cannot find it anymore :-(