Pop'n Music ASC (official) lighting

[Flazh]

Right, heres what I'm thinking. Since the ASC uses arcade parts for the buttons, would it be possible to setup a lighting system that simply lights the button when its pressed. Now I haven't opened up my ASC yet as I am wondering if anyone else has opened theirs and seen if this can be done already. If anyone has pics of this attempted, done, failed or just information, please can you post your findings here. Do the buttons have the standard arcade mounts? And would it be possible to tap voltage from the PS2 to light low voltage, bright LEDs or is it screaming for an external power system/Batteries? Also, would any physical and most importantly, permenant changes need to be made to the controller?