PLEASE HELP ME FIX THIS CODE. I WANT IT TO HAVE USER INPUT TO CHANGE AND IMAGE FILTER TO BLUE RED OR GREEN.

user_color = input("What color would you like to paint the canvas, blue, red or green?:")

def user_red(pixel):
pixel[0] = 100 + pixel[0]
pixel[1] = 100 - pixel[1]
pixel[2] = 100 - pixel[2]

return pixel

def user_green(pixel):
pixel[0] = 100 + pixel[0]
pixel[1] = 100 - pixel[1]
pixel[2] = 100 - pixel[2]

return pixel

def user_blue(pixel):
pixel[0] = 100 + pixel[0]
pixel[1] = 100 - pixel[1]
pixel[2] = 100 - pixel[2]

return pixel

def custom_filter(image, user_color):
for x in range(image. get_width()):
for y in range(image. get_height()):
pixel = image. get_pixel(x, y)
new_colors = invert_pixel(pixel)
image. set_red(x, y, new_colors[0])
image. set_green(x, y, new_colors[1])
image. set_blue(x, y, new_colors[2])

return image

def change_image():
global image
image = custom_filter(image, user_color)

timer. set_timeout(change_image, IMAGE_LOAD_TIME)