WMFs and EMFs can be recolored.
BMP, JPG, PNG, TIF and GIF (those are probably the most popular image
formats) cannot.
I'm not 100% positive about GIFs, but I tried both an animated and
non-animated one here, and neither could be recolored, so that's my story
and I'm stickin' to it. :-)

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>I understand that some clipart that is inserted into a PowerPoint slide can
> be recolored. Bitmaps are not one of these. Can someone tell me which
> image
> file types can be recolored and which types cannot? Thanks!
Trudy - 02 Nov 2006 23:04 GMT
Excellent! Thanks a lot!
> WMFs and EMFs can be recolored.
> BMP, JPG, PNG, TIF and GIF (those are probably the most popular image
[quoted text clipped - 8 lines]
> > image
> > file types can be recolored and which types cannot? Thanks!