I believe the vertical slats are black in the Sport and M-Sport lines. The vertical slats in other lines have different finishes. A bit confusing definitely, I never considered the other lines had different types of grills.
The black kidney grills EVERYONE (including me) are installing are completely black, including the outer oblong section. Very noticeable where the headlight and grill meet. Most guys are just installing themselves. There are videos and forum threads to assist you.
Or if you're a lazy bastard like me, just get them port installed. But, then you can't eBay the old grills.
Whatever, I've ordered that ZB3 package. I have to port install.