def warnify(self, message, duration=3000, notification_clicked_slot=None, **kwargs):
        """
        Displays an Application notification warning.

        :param message: Notification message.
        :type message: unicode
        :param duration: Notification display duration.
        :type duration: int
        :param notification_clicked_slot: Notification clicked slot.
        :type notification_clicked_slot: object
        :param \*\*kwargs: Keywords arguments.
        :type \*\*kwargs: \*\*
        :return: Method success.
        :rtype: bool
        """

        return self.notify(message,
                           duration,
                           notification_clicked_slot,
                           message_level="Warning",
                           color=QColor(220, 128, 64),
                           background_color=QColor(32, 32, 32),
                           border_color=QColor(220, 128, 64),
                           **kwargs)