Just read through this entire thread. It never ceases to amaze the quality of work Carey does.
Lane, have you settled on an interior color yet? We are really fortunate to have one of two known Bosch distributor experts in SLC. After a conversation I had with him last year wrt imprecise timing and advance issues with my (turns out to be) Chinese 009, he found a German one in his scrap/parts bin and agreed to rebuild it for me.
Point being, he had an Aetna Blue/Red Karmann Coupe. I was so gobsmacked by the color combo I was dreaming about it for weeks, including contemplating a respray of my Spyder to match. I finally settled on getting some blue vinyl darts like Scott's car.
I think your "Oxblood" idea is great. I think "Medium Red" or "Cardinal" from Carey's swatches woukd both look great with your blue. Given how your blue is darker, maybe the Cardinal.