[Shahdog]

I replaced my mSport OEM LCI bumper after getting scratched, with a BMW performance rear Bumper and Aero Diffuser

I am considering painting parts of the new diffuser space grey as in PIC 5 from BMW Performance Geneva Show

Msport bumper is for sale

the performance diffuser did not fit on my mSport, although on the BMW USA website it states for msport !@!@
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PIC 1
PIC 2 are of New BMW Performance Aero Rear Bumper and Diffuser

PIC 3 New BBS Centercaps for 18 inch RGR

PIC 4 Msport Bumper at body shop OEM LCI e90 for sale
what BMW performance bumper replaced..

PIC 5 BMW Performance Car from Geneva Show
Should i paint my Diffuser (PIC 1-2) or leave it be??