Just got this from my dealer, apparently available for the public.
BMW Individual Manufaktur Paintwork (right-click-save-as)
From the PDF:
BMW INDIVIDUAL MANUFAKTUR INTRODUCTION I.
- This collection guide gives a brief overview of BMW Special Request colours and thus shows the variety of possibilities to personalize the costumers BMW automobile.
- These colour samples and images are meant to give you a first impression of paints and materials. Experience has shown, however, that printed or online versions of paintworks cannot always faithfully reproduce the appearance of the originals.
- Please note that not all colours are available on all models. Please refer to the National Sales Office for details.