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())