def METHOD_NAME(self) -> None:
    self.color1_rect = self._widget.findChild(QtWidgets.QColumnView, "color1_rect")
    self.color2_rect = self._widget.findChild(QtWidgets.QColumnView, "color2_rect")
    self.color3_rect = self._widget.findChild(QtWidgets.QColumnView, "color3_rect")
    self.label1 = self._widget.findChild(QtWidgets.QLabel, "label")
    self.label2 = self._widget.findChild(QtWidgets.QLabel, "label_2")
    self.label3 = self._widget.findChild(QtWidgets.QLabel, "label_3")