Below is the only thing I changed. Is there something else i have to change?
<characteristic type="HKCU\Software\Microsoft\Today">
<parm name="Skin" value="\Windows\Ron Arad orange.tsk" datatype="string"/>
<parm name="UseStartImage" value="1" datatype="integer"/>
<parm name="DPI" value="192" datatype="integer"/>
<parm name="MultiColorThemeEnabled" value="1" datatype="integer"/>
</characteristic>
EDIT: I think I just saw the other items I have to change in the provxml. Ill give it a try.