You should contact a theme designer to try and get this made... Not sure if the necessary tools are out yet for Windows 8 yet, but this theme looks entirely possible, minus the tabs. I think the taskbar needs a little work, but other than that, this is absolutely gorgeous, and I would pay to use this theme, if it was done right.
With tabs brilliantly placed at the bottom of the window... very clever!! Nice work, I am making a Win Explorer concept and I may include this idea... with credits of course!! I already included tabs with my concept, but they were included at the top of the page on top of the Quick Access Toolbar. Great ideas!