You can clone with
on IE9 (IE8 Works!) the background-clip property with the background-color property not working ... Its rendered like border-box...
-pie-background: rgba(255,255,255,0.5) padding-box;
as i say IE8 works great
Honor background-clip for the background color in IE9. Fixed issue #207.
Thanks for reporting, this has been fixed in the master branch.