Well, I never knew that

[the Nefyn cat]

but now I do.
https://bimmertips.com/origin-bmw-motorsport-colors/

 

[Slam]

Neither did I , interesting fact

 

[NZ00Z3]

It must be my male eyes, but I see light blue, dark blue and red. Where is the purple???

 

[the Nefyn cat]

It's on the interweb so it must be true. Although you may be right, too.

 

[Retrospective Soothsayer]

I like...another BMW factoid to bore my family & mates with !

 

[DaveB with a Z3]

Apologies to all local M owners as I stare and argue over the purple bit in the middle