I have tried various ways to do it but I miss something. in the beggining I thought I need to create a style and than assign it to the button
st = ttk.Style()
st.configure('blueTButton', foreground="white", background="blue")
Btn.configure(style='blueTButton')
but I got an error: _tkinter.TclError: Layout blueTButton not found
so I tried this:
Btn.configure(foreground = 'red')
# and also
Btn.config(foreground = 'red')
and many other stupid attempts.
can anyone assist?