NX-Aura RGB

import serial
from tkinter import *

ser = serial.Serial(
    port='COM4',\
    baudrate=9600,\
    parity=serial.PARITY_NONE,\
    stopbits=serial.STOPBITS_ONE,\
    bytesize=serial.EIGHTBITS,\
    timeout=0)

barva = '#00ffcc'

def show_values():
    mez=str(w1.get())+"x"+str(w2.get())+"x"+str(w3.get())+"x"
    ser.write(mez.encode())

master = Tk()
master.title("NX-Aura RGB")
master.configure(background=barva)

R = Text(master, height=1, width=12,bg="#fff000000")
R.insert(END, "  Red: \n")
R.grid(row=0, column=0)

G = Text(master, height=1, width=12,bg="#000fff000")
G.insert(END, "  Green:\n")
G.grid(row=1, column=0)

B = Text(master, height=1, width=12,bg="#000000fff")
B.insert(END, "   Blue: \n")
B.grid(row=2, column=0)

w1 = Scale(master, from_=0, to=255, orient=HORIZONTAL,highlightbackground=barva)
w1.grid(row=0, column=2)
w2 = Scale(master, from_=0, to=255, orient=HORIZONTAL,highlightbackground=barva)
w2.grid(row=1, column=2)
w3 = Scale(master, from_=0, to=255, orient=HORIZONTAL,highlightbackground=barva)
w3.grid(row=2, column=2)

Button(master, text='odeslat', command=show_values).grid(row=4, column=1)

mainloop()