style type="xml/css"

I wonder if we’ll ever see CSS in XML-format. Imagine creating styles like:

<style type="xml/css" media="screen">
   <rule>
      <selector>body</selector>    
      <attributes>
         <background>
            <color>white</color>
         </background>
      </attributes>
   </rule>  
   <rule>
      <selector>div.header</selector>
      <selector>div.something + div.another</selector>  
      <attributes>
         <border>1px solid black</border>
         <border>
            <bottom>2px dotted red</bottom>
         </border>
         <border>
            <left>
               <size units="px">1</size>
               <linestyle>dashed</linestyle>
               <color>#FF0000</color>
            </left>
         </border>
      </attributes>
   </rule>
</style>

I doubt there’s any real benefit to it, just an odd thought.