VW Electrics dash lights upgrade
You could also get some blue LEDs and some 470ohm resistors and make your own.
286 wedge style 12v LED bulbs are also widely available on ebay
You could also upgrade your existing holders to take 12v LED bulbs like I did
I found this technical information on the use of LEDs - an excellent resource!
NEW: This webpage provides a very easy way to calculate the resistor size for any LED and drive voltage.