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Grey interior would look good with the exterior color. White would look nice but shows dirt easier. Black also works but will make the car look too dark. Leather or premium grade vinyl will be durable, easy to clean, but in time cracks which surely does not look good. A high grade of clothe can also be durable, not as easy to clean, but comes in more varieties of color and design. Personally, I would go with 2-tone grey clothe interior using a high grade of clothe. If you you wanted to protect the clothe from stains, you could add those high grade clear vinyl covers over the clothe.
You could do the interior in
Smurf Blue as that
would match also.
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