I just remembered the good old days when you could buy the original button set from BWM and what came in the package was a full front panel with just some yellow paint on the fascia which you could easily clean and install the full front panel on fraction of the price of the actual front panel which was also available.

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E39 530dA -02 M-Sport Messing metallic
E53 X5 3.0dA -06 Sport Stratus grey
E70 X5 40d -12 M-Sport Space grey