Hello.
This is a continuation of the error that was in FH4 and FH3. The surround of the side vents on the car are supposed to be body coloured, where as the (fake) vent is black. Would be great if you could change that.
Just noticed this has appeared on the FH5 Known Issues. If that means it’s getting fixed, then I thank the powers that be be very much 
If this has persisted since FH3, they’ll never fix it. I had to check out multiple photos and even Need For Speed had it right.
I’m not expecting them to fix it for FH5, but if FH6 is a totally new ground up build like Forza Motorsport, I’m hoping they can fix it in that, “IF” (fingers crossed!)the car is in the game.
This issue was fixed with the Series 24 content update on August 15th, 2023.
