it's your car. like you said it really won't ever be a big big $$ car. finish it how you would like it.

I myself don't care for a 3 tone color cars.
I would do it with a black top, stripe and black interior.
or leave the blue interior put a white top and a white stripe on it.
i think it would really pop with the white/white on a blue/ blue car. you don't see that combo often. then if you decide to sell. the white stripe is easily and cheaply removed and replaced with a black one if the buyer prefers original. if you put a black top on it would cost much more to return to stock.
it would really pop if you put white interior in it to match the white top and stripe.