I would also guess that since PowerPoint is still a presentation (primarily)
software, the emphasis would stay on screen color -- RGB.

However, since you will be printing the slide image (why else would you need
CMYK?), why not choose one of the Save As... image types that can then be
converted to CMYK formats via one of the Adobe or Corel products?

Yes, I know it would be nice if every program exported to every format, but
I would expect one of MS's print programs (such as Publisher or Word)  to
embrace CMYK before I would expect a display program (such as PowerPoint).

It can be, but doesn't have to be.  And even if it's at the OS level,
applications can use it or not.  And even if they use it, that doesn't
necessarily mean that they're able to use CMYK color.

Conversely, applications can use CMYK color w/o color management in place.  
CorelDraw, Illustrator, Freehand, Photoshop and the lot have allowed CMYK color
since the bad ol' days of Windows 3.x

So while CMYK and color management may hold hands, they're not really connected
anatomically. ;-)

-----------------------------------------
Steve Rindsberg, PPT MVP
PPT FAQ:  www.pptfaq.com
PPTools:  www.pptools.com
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