如何在PyQt5中设置PlotWidget刻度线颜色？

from PyQt5.QtWidgets import QApplication, QMainWindow
from PyQt5.QtGui import QColor
from pyqtgraph import PlotWidget

class MainWindow(QMainWindow):
    def __init__(self):
        super().__init__()
        self.setWindowTitle("PlotWidget刻度线颜色设置示例")
        self.plot_widget = PlotWidget(self)
        self.setCentralWidget(self.plot_widget)

    def set_axis_color(self, color):
        self.plot_widget.getAxis("bottom").setPen(color)
        self.plot_widget.getAxis("left").setPen(color)

if __name__ == "__main__":
    app = QApplication([])
    window = MainWindow()
    window.set_axis_color(QColor(255, 0, 0))  # 设置刻度线颜色为红色
    window.show()
    app.exec_()