dlg.GetColourData().SetChooseFull(True)
         if dlg.ShowModal() == wx.ID_OK:
             self.sketch.SetColor(dlg.GetColourData().GetColour())
         dlg.GetColourData().SetChooseFull(True)
         if dlg.ShowModal() == wx.ID_OK:
             self.sketch.SetColor(dlg.GetColourData().GetColour())