...

src/kr/co/swh/lecture/python/pyqt5/mainwindow3.py

 import sys
 from PyQt5.QtWidgets import *
 from PyQt5.QtGui import QIcon
- 
+from PyQt5.QtCore import Qt
+
 class MyWindow(QWidget):
     def __init__(self):
         super().__init__()
      
     def initUI(self):
         self.setWindowTitle(self.title)
+        self.setWindowIcon(QIcon('favicon.ico'))
         self.setGeometry(self.left, self.top, self.width, self.height)
+        
+        self.setAutoFillBackground(True)
+        p = self.palette()
+        p.setColor(self.backgroundRole(), Qt.darkRed)
+        self.setPalette(p)
+        
         self.show()
      
 if __name__ == '__main__':