Two tone on S15 Blazer/Jimmy
 

Come to find upon reading my RPO codes today, my truck was originally two tone. Primary color states silver metallic and secondary color states black metallic. Would the primary color be the top color or the middle stripe?

Are either of those colors present on your vehicle currently.

But primary color is the color that covers the majority of the body.

No, vehicle was repainted solid blue some time ago.