Interesting science factoid .... Black is the color that gains heat the quickest, but it also is the color that loses heat the quickest too when it is subjected to wind, etc.
Interior I have been in the process of changing my 73 Comet's interior to a two tone also and I think the Tan/Black looks pretty good, the original LDO tan was getting a little boring to me.
I did mine in two tone, tan seats, dash, door panels, headliner. Went black carpet, painted door metal black, black dash cover.