I'm trying to customize my Gtk+3.0 theme, when I make a change in my theme, I change between two themes (with MyUnity) to force applications to reload the theme and test mine. But when I do that, the theme is not refreshed to appreciate my changes, still in an old version, apparently Gtk+ is caching the theme information somewhere. When I close and reopen session, I can appreciate my theme changes, but doing this for each change made is very annoying. Is there a way to refresh my theme and see my changes (a command line program or an Gtk+ API call for example)?