Description of problem: Currently window icons (the ones appearing in the taskbar) are taken form /usr/share/pixmaps icons providing by application developers. Instead, it would be better to use the icon theme system so that the launcher icon and the taskbar icon are consistent. Version-Release number of selected component (if applicable): redhat-artwork-0.60-1
I agree with you, however this is one for bugzilla.gnome.org due to the pervasiveness of the change. I or someone else may have already filed it there, even.
In fact, API has been added for this upstream, and there is some momentum towards changing this in all apps (see desktop-devel-list recently). I'm closing this since this seems to be handled upstream.