The tips look crooked in the pic showing straight on in your driveway, but it might just be the pic.
Prop, I'm looking to do this knob in my X5 but tough to tell what kind of illumination, the picture looks red, I have to do more research and cross reference part numbers, what cars had red illumination besides your 540?
M-Tech Illuminated Gear Knob
This is the cross reference when the part # in that link is ran on RealOEM, I looked at the pics in the link again and it does look red illuminated:
E30:
Details on E30
E30 318i Convertible
E32:
Details on E32
E32 735i Sedan
E34:
Details on E34
E34 M5 3.6 Sedan
E34 525i Sedan
E34 530i Sedan
E34 535i Sedan
E36:
Details on E36
E36 M3 Sedan
E36 M3 Convertible
E36 318i Convertible
E36 318i Sedan
E36 318is Coupe
E36 320i Sedan
E36 323i Coupe
E36 323i Convertible
E36 325i Sedan
E36 325i Convertible
E36 325is Coupe
E36 328i Coupe
E36 328i Convertible
E36 328i Sedan
E36 M3 Coupe
Z3:
Details on Z3
Z3 Z3 M Roadster
Z3 Z3 M Coupe