Finaly uxtheme patched in Windows 8 RTM by M.Hoefs
You can download it from here>> http://www.syssel.net/hoefs/software_uxtheme.php
And you can test it with first windows 8 theme by bhast2 from here>> http://bhast2.deviantart.com/art/Embedded-Beta-for-Windows-8-308738504
Its not full change but make some change in your windows 8 theme.
We will design new theme for win 8 soon and we will add it in skin pack.