问是否有一种方法可以刷新已重新配置小部件的tkinter框架？

EN

import tkinter as tk

class SetColor:
    def __init__(self, color):
        self.color = 'green'
current = SetColor('green')

root = tk.Tk()

lbl_color = tk.Label(root, text='Choose button color')
lbl_color.grid(row=0, column=0, pady=5, padx=2)

btn_red = tk.Button(root, text='Red', bg=current.color, command=lambda:update_color('red'))
btn_red.grid(row=0, column=1, pady=5, padx=2)

btn_green = tk.Button(root, text='Green', bg=current.color, command=lambda:update_color('green'))
btn_green.grid(row=0, column=2, pady=5, padx=2)

btn_blue = tk.Button(root, text='Blue', bg=current.color, command=lambda:update_color('blue'))
btn_blue.grid(row=0, column=3, pady=5, padx=2)

def update_color(color):
    current.color = color
    #THIS is where I'm wondering if there's a way to refresh without individually updating each widget as I've done below
    btn_red.config(bg=current.color)
    btn_green.config(bg=current.color)
    btn_blue.config(bg=current.color)       
    
root.mainloop()