Yeah, that's a tough one. I don't like the red hood stripes, so for me that option would be out. That leaves two different colors (red side/black hood) or black stripes for both.
I recently looked at a white GT/CS for sale for a fellow site member and it had red interior and black stripes. To be honest I didn't notice the conflict at all. It's not technically correct, but it certainly didn't scream out at me as looking wrong.
The 2 different stripe colors bug me in theory, but once on the car they could look great.
Hmmmm....tough decision.