night mode gui

from guizero import App, Text, ButtonGroup, Combo, PushButton, TextBox, CheckBox
app = App(title="Hero-o-matic",height=600, width=400)
def night_or_day_mode():
    if darkmode.value == 1:
        app.bg = "black"
        app.text_color = "white"
    else:
        app.bg = "white"
        app.text_color = "black"



# Your GUI widgets go here
darkmode = CheckBox (app, text ="night mode", command = night_or_day_mode)

# Show the GUI on the screen, start listening to events.
app.display()