Python - Tkinter - Button hovering

from tkinter import *

''' hovering button '''

''' normal `activebackground` works on hovering in Linux but not in other systems '''

# ---

class RedButton(Button):

    def __init__(self, parent, **options):
        Button.__init__(self, parent, **options)

        self['bg'] = 'red'
        self['fg'] = 'black'

        # or self.config(bg='red')

        self['activebackground'] = 'blue'
        self['activeforeground'] = 'white'

        self.bind('<Enter>', self.on_hover)
        self.bind('<Leave>', self.on_unhover)

        #self.bind('<Button-1>', self.on_left_mouse_click)
        #self.bind('<Button-2>', self.on_middle_mouse_click)
        #self.bind('<Button-3>', self.on_right_mouse_click)

        #self.bind('<Double-Button-1>', self.on_left_mouse_doubleclick)
        #self.bind('<Triple-Button-1>', self.on_left_mouse_tripleclick)

    def on_hover(self, event=None):
        #print('hover')

        self['bg'] = 'blue'
        self['fg'] = 'white'

        self['activebackground'] = 'blue'
        self['activeforeground'] = 'white'

    def on_unhover(self, event=None):
        #print('unhover')

        self['bg'] = 'red'
        self['fg'] = 'black'

        self['activebackground'] = 'red'
        self['activeforeground'] = 'black'

    # ---

    def on_left_mouse_click(self, event=None):
        print('nuclear missile launched')

    def on_right_mouse_click(self, event=None):
        print('we came with peace')

    def on_middle_mouse_click(self, event=None):
        print('where am I ?')

    def on_left_mouse_doubleclick(self, event=None):
        print('double nuclear missile launched')

    def on_left_mouse_tripleclick(self, event=None):
        print('triple nuclear missile launched')

# ---

window = Tk()

RedButton(window, text="Button #1").pack()
RedButton(window, text="Button #2").pack()
RedButton(window, text="Button #3").pack()

window.mainloop()