Has anybody changed the colour of their dashboard/instrumentation lights?

I was thinking of changing the green backlight for a blue one(ala Audi's & Veedubs)... are there any easy ways of doing this or problems to expect?

I'm just looking for some advice before I rip my dashboard out :eek:

It's been discussed before in the thread below but I don't know of any member who has done it. If someone has, perhaps they will pop out of the woodwork now.

http://www.briskoda.net/forums/showthread.php?t=11687