When it comes to color choice, it is the matter of taste, unless of course you plan to go back to original, which could potentially mean replacing the interior as well. I am in the same shoes right now, and it will come down to how pretty my car would look like with off-white paint and turquoise interior vs. any other combo. I believe i will opt for red/black, since black interior is relatively more forgiving with dust, dirt, stains etc.
Question: did you find any issues with the rotten cross-member wings, those underneath the fenders? Mine are all rusty and i could not locate them new.