Yeah, I quickly looked at it, to see how hard it would be. Dosn't seem too bad. I looked for the .ico specifcation and they can be converted to xbm with ImageMagick, so thats easy. I don't know how they are packed into the library files though...that may take some research. And then you may face the problem of Windows licensing issues if you mess with "their" files. :-(
I'm not really a human, but I play one on earth.