import RPi.GPIO as GPIO

GPIO.setmode(GPIO.BCM)

# PINs
red = 20
green = 21
blue = 22

# frequency for PWM
freq = 60

GPIO.setup(red, GPIO.OUT)
GPIO.setup(green, GPIO.OUT)
GPIO.setup(blue, GPIO.OUT)

# defining the pins that are going to be used with PWM
RED = GPIO.PWM(red, freq)
GREEN = GPIO.PWM(green, freq)
BLUE = GPIO.PWM(blue, freq)


try:
        while True:
                RED.start(100)
                GREEN.start(1)
                BLUE.start(1)

except KeyboardInterrupt:
        GPIO.cleanup()