我试图改变我的PNG图像的颜色后，它的颜色设置为qtwidges.QColorDialog. 用Python

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然而，当我应用我的代码时，结果是：

它改变了我的PNG图像的背景

png来源在这里：DMX\U Led

{1美元^

我写了一小部分代码示例：import os

import sys

import numpy as np

from PyQt5 import QtCore, QtGui, QtWidgets

dir_path = os.path.dirname(os.path.realpath(__file__))

class Ui_MainWindows(QtWidgets.QMainWindow):

def __init__(self):

super(Ui_MainWindows,self).__init__()

self.central_widget = QtWidgets.QWidget()

self.setCentralWidget(self.central_widget)

self.setWindowTitle("Change color PNG Test")

self.setStyleSheet("background-color:black;")

self.resize(350, 350)

self.DMX_Color = QtGui.QColor('#000000')

self.button_DMX = QtWidgets.QPushButton(self.central_widget)

print("Add ")

path_image = os.path.join(dir_path,"Ressource/Rampe3.png").replace("\\", "/")

qss = 'border-image: url({})'.format(path_image)

self.button_DMX.setGeometry(100, 100, 100, 61)

self.button_DMX.setStyleSheet(qss)

self.button_DMX.clicked.connect(self.processButton_DMX)

def processButton_DMX(self):

print("Projector DMX clicked ")

self.DMX_Color.setRed(0)

self.DMX_Color.setGreen(0)

self.DMX_Color.setBlue(255)

print("Change Color Button DMX")

effect = QtWidgets.QGraphicsColorizeEffect(self.button_DMX)

effect.setColor(self.DMX_Color)

self.button_DMX.setGraphicsEffect(effect)

def main():

app = QtWidgets.QApplication(sys.argv)

MainWindow = Ui_MainWindows()

MainWindow.show()

rc = app.exec_()

sys.exit(rc)

if __name__ == "__main__":

main()