Sold the car as standard. Wings are worth more sold separately. Purely financially motivated!
The vents serve no purpose whatsoever, wholely aesthetic, which isn't a bad thing! If you check out your engine bay you will see that there is no route through the baulkhead/inner wing to this area. Vents like this would also serve to de-pressurise the wheelarch, but there are no slots in the wheelarch liner on the GTV unlike other cars that feature side vents. Apparently reducing air pressure in the wheelarch reduces drag on the wheel, thereby improving performance. So all show, no go I'm afraid
The mesh is actually white. That's how they came new, can't explain why. I know the wings fitted to the 'cup' cars had black mesh but even the picture in the accessories catalogue looks white, and that's on a red car!
Genuine Alfa accessory, usual grey plastic ready to paint, white mesh inserts As it happens they suited my car better than black anyway, matches the wheels and indicators etc, but easily changed as required.