Python / Tkinter-将按钮状态写入文件以在下次启动时自动重新应用？

Question

我试图将按钮的前景色（由用户单击更改）的状态保存到.txt文件中，以便在下次运行时自动重新应用所述前景色。这是我拥有的代码... toggle_color可以完美地工作，它也可以将颜色状态写入.txt文件。但是，它不会在启动时自动更改颜色。意思是，我可能在最后一部分弄糟了。我做错了什么？

编辑：忘记调用.read（）。但这toggle_color(colors = ['white', '#0055C4'])不是更改先前定义的公认方法。因此，我将如何更改toggle_color的colors变量？

 def toggle_color(last=[0]): #this is what toggles the fg color of the button

        colors = ['#0055C4', 'white']

        color = colors[last[0]]

        last[0] = (last[0] + 1) % 2

        savepass.config(fg=color)

        with open('loaderstate.txt', 'w') as loader_file:

            loader_file.write(savepass.cget('fg'))

savepasspic = PhotoImage(file="RememberMeBackground.png")

savepass=Button(root, font=('Arial Black',10),image=savepasspic, text="    remember me", compound=CENTER, command=toggle_color, activeforeground="#0055C4", activebackground="#303030", relief=GROOVE)

savepass.config(borderwidth=0, highlightthickness=0, width=120, height=18, fg='white', bg="grey")

savepass.place(x=105, y=287)

def blueoverall(): #changes the fg color of the button, and reverses toggle_color order

savepass.config(fg='#0055C4')

toggle_color(colors = ['white', '#0055C4'])

with open('loaderstate.txt', 'r') as loader_file: #should run automatically on startup and determine color of button fg

    if loader_file.read == '#0055C4':

        blueoverall()

    if loader_file.read == 'white':

        savepass.config(fg='white')