software+to+make+windows+operating+system+look+fancy

Windowfx by stardock Nimi visuals 7stacks

also see http://alternativeto.net/software/nimi-visuals/

=Microsoft Color Control Panel Applet for Windows XP v.1.0.176.0= http://www.winsite.com/Desktop/Miscellaneous/Microsoft-Color-Control-Panel-Applet-for-Windows-XP/ found by searching advanced display setting software for windows

^ I tried to see if any of these allow for color desaturation, but I don't think any of them do.

Note that Compiz for Linux does allow for color desaturation though.