yeah brog
thats easy
you see on the KR.py script it flashes a couple of times on startup

its simple to just adjust the loop and make it longer


i took this script and used it to make a 6key chord - pressing keys anywhere near the LED makes it light up and stay lit up indicating the mode.
turns the keyboard from 38 keys to 6

a bit of example code is posted here

http://twitter.com/lcuk/status/13642303906
http://liqbase.net/stuff/liqbubbles2.py