def reset_highlights(self):
        """
        Remove red outlines from all buttons
        """
        for dtype in ["specimens", "samples", "sites", "locations", "ages"]:
            wind = self.FindWindowByName(dtype + '_btn')
            wind.Unbind(wx.EVT_PAINT, handler=self.highlight_button)
        self.Refresh()
        #self.message.SetLabel('Highlighted grids have incorrect or incomplete data')
        self.bSizer_msg.ShowItems(False)
        self.hbox.Fit(self)
Remove red outlines from all buttons