self.color_button16 = QtWidgets.QPushButton(self.centralwidget)
        self.gridLayout.addWidget(self.color_button16, 3, 0)
        self.color_button16.setMinimumSize(30, 30)
        self.color_button16.setMaximumSize(30, 30)
        self.color_button16.setStyleSheet("background-color :khaki")
        self.color_button16.clicked.connect(self.setcolor15)

    def setcolor15(self):
        self.textEdit.setStyleSheet("background-color :khaki")
        MainWindow.statusBar().showMessage('Zmieniono kolor.')