How to animate an button in pygame so that when I have my cursor over it it shows a kind of of difference so you know its what your hovering over

Question

Im not trying to use classes for this cause im trying to get the cords of my mouse then test if they are in the posistion of a blit which moves an image over to the button and when nopt hovering over it it is not there, images are at the bottom, i want it to show that im hovering over it if that makes sense

import pygame as pg

def window_settings():
    global screen, size, clock, FPS
    FPS = 60
    pg.init()
    size = (900,900)
    screen = pg.display.set_mode(size)
    clock = pg.time.Clock()
    pg.display.set_caption("CHESS")

#---------------IMAGES---------------#
titleIMG = pg.image.load('sprites/titleIMG.png')
hoverPlayIMG = pg.image.load('sprites/hoverPlayIMG.png')

#----------------DEF-----------------#
title_screen = True
BLACK = (0,0,0)
playIMG = 1000
hoverOver = False

def titleScreen():
    global playIMG, mposHover1, mposHover2, hoverOver
    if mposHover1 >= 279 and mposHover1 <= 603 and mposHover2 >= 513 and mposHover2 <= 625 and hoverOver == False:
        hoverOver = True
        playIMG -= 1000
    if hoverOver == True and playIMG == 0:
        print('hi')
        playIMG += 1000
        hoverOver == False

window_settings()
run = True
while run == True:
    screen.fill(BLACK)
    for event in pg.event.get():
        if event.type == pg.QUIT:
            run = False
        if title_screen == True:
            mposHover1, mposHover2 = pg.mouse.get_pos()
            #print(mposHover1, mposHover2)
            if event.type == pg.MOUSEBUTTONDOWN:
                mpos1, mpos2 = pg.mouse.get_pos()
                print(mpos1, mpos2)

        titleScreen()

    screen.blit(titleIMG, [0,0])
    screen.blit(hoverPlayIMG, [playIMG,playIMG])

    pg.display.flip()   
    clock.tick(FPS)

pg.quit()