Your English teacher must be some lazy a**.
Anyway, welcome to the forum.
You sound like you know something about the products, you mentioned, but you don't know how to use them yet? Well, reading FAQ near the top of the board is strongly recommended, or you only get the same replies, "Read FAQ."
If you thoroughly read it, it should solve almost all of your problems.
And which color to use for the body and interior is totally up to your taste, but if I were you, I'd use white or tan for a metallic red body.