为什么我无法在Mac上可视化Tkinter Python中按钮的背景颜色？

import tkinter as tk
from tkinter import ttk

root = tk.Tk()

# 设置ttk主题为clam（或其他主题）
style = ttk.Style()
style.theme_use('clam')

button = ttk.Button(root, text="Click Me", style='TButton', background='blue')
button.pack()

root.mainloop()

import tkinter as tk

root = tk.Tk()

# 创建一个自定义样式的按钮
button = tk.Button(root, text="Click Me", bg='blue', activebackground='green')
button.pack()

root.mainloop()

import tkinter as tk

def on_button_click():
    print("Button Clicked!")

root = tk.Tk()

canvas = tk.Canvas(root, width=100, height=50)
canvas.pack()

button_id = canvas.create_rectangle(10, 10, 90, 40, fill='blue')
canvas.create_text(50, 25, text="Click Me", font=("Helvetica", 12), fill='white')

canvas.tag_bind(button_id, '<Button-1>', lambda event: on_button_click())

root.mainloop()