import tkinter as tk
from tkinter import ttk

class App(tk.Tk):
    def __init__(self):
        super().__init__()

        self.geometry('300x100')

        button=ttk.Button(self,text='Save')
        button.pack(expand=True)

        style=ttk.Style(self)
        style.configure('TButton',font=('Helvetica',16))
        style.map('TButton',
        foreground=[('pressed','blue'),
                    ('active','red')])

        print(style.layout('TButton'))

if __name__== "__main__":
    app=App()
    app.mainloop()