Please Help! Absolute Novice - New Job, have this task.

[mjnash194 at gmail.com]

Absolute beginner here, have no idea what I am doing wrong. All I want to do here is have the pushButton in PyQt5 to change to "Working..." and Red when clicked... which it currently does. Thing is I need it to also change back to the default "SCAN" and Green color when done running that method the button is linked to...

I know this is a super simple problem, and forgive any Novice errors in this code. I know very very little but if you guys can help me I would highly appreciate it!!! :)

from PyQt5 import QtCore, QtGui, QtWidgets
import sys
import pyautogui



class Ui_MainWindow(object):
    def setupUi(self, MainWindow):
        MainWindow.setObjectName("MainWindow")
        MainWindow.showMaximized()
        MainWindow.setMinimumSize(QtCore.QSize(0, 0))
        MainWindow.setMaximumSize(QtCore.QSize(3840, 2160))
        font = QtGui.QFont()
        font.setFamily("Arial Black")
        MainWindow.setFont(font)
        MainWindow.setStyleSheet("background-color: rgba(0, 85, 127, 100);")
        self.centralwidget = QtWidgets.QWidget(MainWindow)
        self.centralwidget.setObjectName("centralwidget")
        self.pushButton = QtWidgets.QPushButton(self.centralwidget)
        self.pushButton.setGeometry(QtCore.QRect(250, 250, 400, 150))
        font = QtGui.QFont()
        font.setFamily("Tahoma")
        font.setPointSize(24)
        font.setBold(True)
        font.setWeight(75)
        self.pushButton.setFont(font)
        self.pushButton.setStyleSheet("background-color: rgb(0, 170, 0);\n"
"color: rgb(255, 255, 255);")
        self.pushButton.setObjectName("pushButton")
        self.label = QtWidgets.QLabel(self.centralwidget)
        self.label.setGeometry(QtCore.QRect(730, 300, 701, 111))
        font = QtGui.QFont()
        font.setPointSize(18)
        font.setBold(True)
        font.setItalic(False)
        font.setWeight(75)
        self.label.setFont(font)
        self.label.setLayoutDirection(QtCore.Qt.LeftToRight)
        self.label.setObjectName("label")
        MainWindow.setCentralWidget(self.centralwidget)
        self.menubar = QtWidgets.QMenuBar(MainWindow)
        self.menubar.setGeometry(QtCore.QRect(0, 0, 1920, 18))
        self.menubar.setObjectName("menubar")
        MainWindow.setMenuBar(self.menubar)
        self.statusbar = QtWidgets.QStatusBar(MainWindow)
        self.statusbar.setObjectName("statusbar")
        MainWindow.setStatusBar(self.statusbar)

        self.retranslateUi(MainWindow)
        QtCore.QMetaObject.connectSlotsByName(MainWindow)

    def retranslateUi(self, MainWindow):
        _translate = QtCore.QCoreApplication.translate
        MainWindow.setWindowTitle(_translate("MainWindow", "MainWindow"))
        self.label.setStyleSheet("background-color: rgba(0, 85, 127, 0);\n"
"color: rgb(255, 255, 255);")
        self.pushButton.setText(_translate("MainWindow", "SCAN"))
        self.label.setText(_translate("MainWindow", "WELCOME"))

        self.pushButton.clicked.connect(self.copy)

    def copy(self, MainWindow):
        self.pushButton.setText('WORKING...')
        self.pushButton.setStyleSheet("background-color: rgb(250, 0, 0);\n"
"color: rgb(255, 255, 255);")
        testprompt=storeid=pyautogui.prompt(text='test', title='test')



class Application():
    def run():
        import sys
        app = QtWidgets.QApplication(sys.argv)
        MainWindow = QtWidgets.QMainWindow()
        ui = Ui_MainWindow()
        ui.setupUi(MainWindow)
        MainWindow.show()
        sys.exit(app.exec_())

Application.run()