Need Help for homework

[Treeeeee_0923]

import tkinter
import random

colours = ['Red', 'Blue', 'Green', 'Pink', 'Black', 'Yellow', 'Orange', 'White', 'Purple', 'Brown']
color_hex_codes = ['#FF0000', '#0000FF', '#008000', '#FFC0CB', '#000000', '#FFFF00', '#FFA500', '#FFFFFF', '#800080', '#A52A2A']

score = 0
timeleft = 30
timerid = None

def startGame(event=None):
        global score
        global timeleft
        global timerid
    
    score = 0
    timeleft = 30
    
    if timerid is not None:
        root.after_cancel(timerid)
        timerid = None
    
    if timeleft == 30:
        countdown()
    nextColour()

def nextColour():
    global score
    global timeleft

    if timeleft > 0:
        random.shuffle(colours)
        color_to_display = colours[0]
        color_to_type = colours[1]

        label.config(fg=color_to_display, text=color_to_type)
        update_buttons(color_to_display)
        
def update_buttons(correct_color):
        for btn, color_hex in zip(color_buttons, color_hex_codes):
            btn.config(state=tkinter.NORMAL, bg=color_hex, command=lambda c=btn['text']: check_color(c, correct_color))
    
def check_color(selected_color, correct_color):
    global score
    global timeleft

    if timeleft > 0 and selected_color.lower() == correct_color.lower():
        score += 1
        scoreLabel.config(text="Score: " + str(score))
        nextColour()

def countdown():
    global timeleft
    global timerid
    
    if timeleft > 0:
            timeleft -= 1
            timeLabel.config(text="Time left: " + str(timeleft))
            timerid = root.after(1000, countdown)
    else:
        end_message.config(text="Game Over! Final Score: " + str(score))
        update_buttons("")
        
def on_enter_press(event):
    startGame()

root = tkinter.Tk()
root.title("COLORGAME")
root.geometry("600x500")

root.bind('<Return>', on_enter_press)  # Bind Enter key to start/restart the game

header_label = tkinter.Label(root, text="Color Matching Game", font=('Helvetica', 18))
header_label.pack(pady=20)

instructions = tkinter.Label(root, text="Click on the color"
                        " of the words, and not the word text!",
                        font=('Helvetica', 14))
instructions.pack()

scoreLabel = tkinter.Label(root, text="Score: " + str(score), font=('Helvetica', 16))
scoreLabel.pack(pady=10)

timeLabel = tkinter.Label(root, text="Time left: " + str(timeleft), font=('Helvetica', 16))
timeLabel.pack()

label = tkinter.Label(root, font=('Helvetica', 60))
label.pack(pady=20)

color_buttons_frame = tkinter.Frame(root)
color_buttons_frame.pack()

color_buttons = []
for color, color_hex in zip(colours, color_hex_codes):
    btn = tkinter.Button(color_buttons_frame, text=color, state=tkinter.DISABLED, bg=color_hex, padx=20, pady=10)
    btn.pack(side=tkinter.LEFT, padx=5)
    color_buttons.append(btn)

start_button = tkinter.Button(root, text="Start Game", font=('Helvetica', 14), command=startGame)
start_button.pack(pady=20)

end_message = tkinter.Label(root, text="", font=('Helvetica', 16))
end_message.pack()

root.mainloop()

Hi guys I have encounter some error when run the code. It show this error but I can't find where:

File <tokenize>:16
    score = 0

^
IndentationError: unindent does not match any outer indentation level

Appreciate if can give me some help

Thanks,
Tristan

[DPaul]

IndentationError: unindent does not match any outer indentation level

Look at lines 12,13,14
P.

[Pedroski55]

A slight problem: all text is black, so I only get a point when the colour written in large letters is black!

Maybe check that!