from machine import Pin
from time import sleep
button=Pin(19, Pin.IN, Pin.PULL_UP)
rgb1:R=Pin(23, Pin.OUT)
rgb1:G=Pin(22, Pin.OUT)
rgb1:B=Pin(21, Pin.OUT)

while True:
  if not button.value():
    rgb1:R.value(1,0,0)
    rgb1:G.value(0,1,0)
    rgb1:B.value(0,0,1)
    sleep(1)
  else:
    rgb1:R.value(0,0,0)
    rgb1:G.value(0,0,0)
    rgb1:B.value(0,0,0)
    sleep(1)