Three Colour LED

#digital version 

from microbit import *

while True:

    pin0.write_digital(1)

    sleep(1000)

    pin0.write_digital(0)

    pin8.write_digital(1)

    sleep(1000)

    pin8.write_digital(0)

    pin12.write_digital(1)

    sleep(1000)

    pin12.write_digital(0)

#analog version - allows for a greater variety of colours.

from microbit import *

while True:

    pin0.write_analog(255)

    pin8.write_analog(0)

    pin12.write_analog(0)

    sleep(1000)

    pin0.write_analog(0)

    pin8.write_analog(255)

    pin12.write_analog(0)

    sleep(1000)

    pin0.write_analog(0)

    pin8.write_analog(0)

    pin12.write_analog(255)

    sleep(1000)