from machine import Pin
import time
btn=Pin(3, Pin.IN, Pin.PULL_UP)
r=Pin(10, Pin.OUT)
g=Pin(11, Pin.OUT)
b=Pin(12, Pin.OUT)

COLORS = [
    (1,0,0),
    (0,1,0),
    (0,0,1),
    (1,1,0),
    (1,1,1),
    (0,0,0),
]

index=0

def show(rgb):
    r.value(rgb[0])
    g.value(rgb[1])
    b.value(rgb[2])

show(COLORS[index])

while True: 
    if btn.value()==0:
        index=(index+1)%len(COLORS)
        show(COLORS[index])
        print(index)
        time.sleep(0.3)
    time.sleep(0.02)