+/*! The font values are all optional. If a NULL is used for any of them, then
+ the default font will be used. */
+RrTheme* RrThemeNew(const RrInstance *inst, gchar *theme,
+ RrFont *active_window_font, RrFont *inactive_window_font,
+ RrFont *menu_title_font, RrFont *menu_item_font);