hack of the enerate_oxy_theme-ng.sh script, works incremental (i.e. keeps pngs and only generates updated ones, should be able to handle small icons, creates 48x48 action icons (as they're on the toolbars), doesn't worry about blanks and periods in filenames, doesn't use extern pograms like cut or sed (that's slow), has an easier to modify codebase)

ASK if you want sodipodi support