OEM CSC will fail. Eventually. The ZSpeed HD CSC is a good option. But I doubt the dealer is going to install one for you unless they are one of the few mod-friendly dealers and even then you'll end up paying for it.
As for the color, I doubt it. Also, people keep saying the next gen Z is around the corner.
TBD.
All that being said, I love my 6MT DD 370Z. 63K miles and counting. GET ONE!!