#!/usr/bin/python
# -*- coding: utf-8 -*-

import keypad, display, random

display.drawFill(0xFFFFFF)
display.flush()

def random_color():
   r = lambda : random.randint(0, 255)
   return '0x%02X%02X%02X' % (r(), r(), r())

def on_key(key_index, pressed):
    if(pressed):
        color = random_color()
        display.drawFill(int(color))
        display.flush()

keypad.add_handler(on_key)