Need new rear tires...

but I don't need new front tires.

I bought a pair of 15" X 7" (Wheel Vintiques) Rallye wheels from FABO member 72Dart6pack.

I have, and I'm keeping, black wall tires (on 14" X 5 1/2" Rallye wheels) up front. Should I have black wall tires on the rear too, or go with raised white letter tires on the rear (Cooper Cobra Radial G/T or BFGoodrich Radial T/A).

Here is a current picture of my car (in front of my childhood home)

Dart GT Bunert.png