Nakamichi and some Alpine units are backlit to match bmw amber
The Nakamichi unit is the MB-75,
The Alpine unit is the CDA-7894 (switches between green and amber)
The Nakamichi unit is great because its 6 cd in dash (no cartridge). Theres also an addition to it that is the same size that holds another 6. Saw an m3 that had the additional piece installed in the space below the OBC. Looks oem, and you can't beat 12 cd in dash capacity.
I'm replacing my sony mobile es 10+1 with a nakamichi if my car ever gets out of the shop.