如何为QPushButton的背景颜色设置动画(动态更改按钮颜色)

from PyQt5.QtWidgets import QApplication, QPushButton, QMainWindow
from PyQt5.QtCore import QPropertyAnimation, QColor

class MainWindow(QMainWindow):
    def __init__(self):
        super().__init__()

        self.button = QPushButton("Button", self)
        self.button.setGeometry(50, 50, 100, 50)

        self.animation = QPropertyAnimation(self.button, b"styleSheet")
        self.animation.setDuration(1000)  # 动画持续时间为1秒

        self.button.clicked.connect(self.startAnimation)

    def startAnimation(self):
        # 创建颜色动画
        colorAnimation = QPropertyAnimation(self.button, b"backgroundColor")
        colorAnimation.setDuration(1000)  # 动画持续时间为1秒
        colorAnimation.setStartValue(QColor(255, 0, 0))  # 初始颜色为红色
        colorAnimation.setEndValue(QColor(0, 255, 0))  # 结束颜色为绿色

        # 将颜色动画添加到整体动画中
        self.animation.setKeyValueAt(0, colorAnimation.startValue())
        self.animation.setKeyValueAt(1, colorAnimation.endValue())

        self.animation.start()

if __name__ == "__main__":
    app = QApplication([])
    window = MainWindow()
    window.show()
    app.exec_()