PyQt5 QColorDialog – Setting background color to its child spin box

# importing libraries
from PyQt5.QtWidgets import * 
from PyQt5 import QtCore, QtGui
from PyQt5.QtGui import * 
from PyQt5.QtCore import * 
import sys


class Window(QMainWindow):

    def __init__(self):
        super().__init__()

        # setting title
        self.setWindowTitle("Python ")

        # setting geometry
        self.setGeometry(100, 100, 500, 400)

        # calling method
        self.UiComponents()

        # showing all the widgets
        self.show()


    # method for components
    def UiComponents(self):

        # creating a QColorDialog object
        dialog = QColorDialog(self)

        # setting custom colors
        dialog.setCustomColor(1, Qt.red)
        dialog.setCustomColor(2, Qt.green)
        dialog.setCustomColor(3, Qt.yellow)
        dialog.setCustomColor(4, Qt.blue)

        # creating label
        label = QLabel("Geeks for Geeks", self)

        label.setAlignment(Qt.AlignCenter)

        # making label multi line
        label.setWordWrap(True)

        # setting stylesheet of the label
        label.setStyleSheet("QLabel"
                            "{"
                            "border : 5px solid black;"
                            "}")


        # getting the custom color
        color = dialog.customColor(4)

        # setting graphic effect to the label
        graphic = QGraphicsColorizeEffect(self)

        # setting color to the graphic
        graphic.setColor(color)

        # setting graphic to the label
        label.setGraphicsEffect(graphic)

        # adding label to the color dialog
        layout = dialog.layout()
        layout.addWidget(label)
        dialog.setLayout(layout)

        # setting style sheet to the color dialog's spin box
        # adding background color
        dialog.setStyleSheet("QColorDialog QSpinBox"
                             "{"
                             "background-color : lightgreen;"
                             "}")

        print(dialog.children())

        # executing the color dialog
        dialog.exec_()

        # deleting the main window
        self.deleteLater()



# create pyqt5 app
App = QApplication(sys.argv)

# create the instance of our Window
window = Window()

# start the app
sys.exit(App.exec())