docs: public static void setPreferredColor(int color) {
  		final Preferences prefs = Preferences.userNodeForPackage(MapElementConstants.class);
  		if (prefs != null) {
  			prefs.putInt("COLOR", color); //$NON-NLS-1$
  			try {
  				prefs.flush();
  			} catch (BackingStoreException exception) {
  				//
  			}
  		}
  	}