code: static void uninitialize() {
          // get the appcontext that we've stored data in
          AppContext ctx = AppContext.getAppContext();
  
          // get the pcl stored in app context
          PropertyChangeListener pcl = (PropertyChangeListener) ctx.get("SeaGlassStyle.defaults.pcl");
  
          // if the pcl exists, uninstall it from the UIDefaults tables
          if (pcl != null) {
              UIManager.getDefaults().removePropertyChangeListener(pcl);
              UIManager.getLookAndFeelDefaults().removePropertyChangeListener(pcl);
          }
  
          // clear out the compiled defaults
          ctx.put("SeaGlassStyle.defaults", null);
      }
docs: Called by SeaGlassLookAndFeel when the look and feel is being
  uninstalled. Performs general cleanup of any app-context specific data.