This info seems pretty hard to find so I thought I'd post up a list of the FAKRA colour coding convention and the jack key shape.

Violet/Bordeux/Wine (Jack D) - GSM
Waterblue/Teal (Jack Z)- neutral coding
Black (Jack A) - FM/Radio without phantom power
Blue (Jack C) - GPS
White (Jack B) - Radio with phantom power
Green (Jack E) - TV
Mustard (Jack K) - Satellite with IF
Grey (Jack G) - Keyless Entry
Cream (Jack B) - BMW Bluetooth/WDCT