Verified answer

Ответ:
1:
import tkinter as tk

def change_window_size():

   window.geometry("650x560")

   window.config(bg='green')

   button.config(bg='blue')

window = tk.Tk()

window.title("Вікно№1")

window.geometry("400x300")

button = tk.Button(text="Розфарбуй", command=change_window_size)

button.place(x=100, y=90)

window.mainloop()

2:

import tkinter as tk

def change_color_and_text():

   root.config(bg="purple")

   button.config(bg="yellow")

   message_window = tk.Toplevel(root)

   message_label = tk.Label(message_window, text="Завдання виконано!", bg="purple", fg="white")

   message_label.pack()

root = tk.Tk()

root.title("Вікно №2")

root.geometry("500x800")

button = tk.Button(root, text="Ок", bg="purple", command=change_color_and_text)

button.place(x=200, y=390)

root.mainloop()