messageBorder = null; buttonBorder = null; messageForeground = null;
  protected void uninstallDefaults()  {    optionPane.setFont(null);    optionPane.setForeground(null);    optionPane.setBackground(null);    minimumSize = null;    messageBorder = null;    buttonBorder = null;    messageForeground = null;    // FIXME: ImageIcons don't seem to work properly    /*    warningIcon = null;    errorIcon = null;    questionIcon = null;    infoIcon = null;    */  }