from machine import Pin, ADC, PWM
from utime import sleep, sleep_ms

r = PWM(Pin(12),freq=5000)
g = PWM(Pin(18),freq=5000)
b = PWM(Pin(15),freq=5000)

while True:
    r.duty(239*4)
    g.duty(242*4)
    b.duty(12*4)
    sleep_ms(500)
    r.duty(165*4)
    g.duty(12*4)
    b.duty(237*4)
    sleep_ms(500)
    r.duty(12*4)
    g.duty(237*4)
    b.duty(170*4)
    sleep_ms(500)