If anyone has a need to replace or upgrade their backlighting I recommend you look at the web site below posted below. They have a range of LED bulbs in all the popular colours and the most common types required.
Especially well priced for Kiwi's wanting a well priced product without incurring the International shipping fees from an overseas supplier or the typically high priced Volvo Dealership prices for standard filament bulbs.
They also work ok with the dimming switches.
Site is Laser Imports Limited