Dutch7

So I saw a couple pictures on google with a black diffuser area on the bumper but it wasnt the whole bumper. Is it just black paint? if so what kind (matte,gloss, etc.). Or is it a whole separate diffuser you have to buy?
here is an example of what I'm talking about.

jig

iTrader: (6)

search ceta mod ls1tech in google and theres a bunch of threads on it

M4N14C

iTrader: (3)

CETA mod. Most people just paint it. I used plastic dip and it still looks new 6 months later:

Dutch7

ok cool ill probably get a body shop to paint it matte black when im ready or a gloss black to match my paint and a black spoiler