That's exactly what was done on mine. Some black was added to the silver base, then clear coated over. I would suggest spraying a few paint samples to get the color mix & tint exactly how you want it.

  Oiluj said:

As my car is Silver Metallic, I went with same level of metallic for the stripe, but a slightly darker shade.

My pics really show the stripe well, but it's quite obvious in shade or indirect light, but almost disappears in bright, direct sunlight.

The frontal pic below shows it a bit better, but still does not show as well as when seen with your own eyes... Look down at the spoiler area for the best indication of it's actual appearance.

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Should have been "My pics don't really show the stripe well..."

Are you going to have a clear put on the car? If you are get some candy smoke a that is the same brand as the clear and have the painter dilute the smoke with the clear and spray till it is dark enough. This way you keep the red and have the color for the stripe, and have it as light or as dark as you want the ghost strip to be.

I was not planning on using clear coat but it might be an option. I think I will contact the paint supplier and see what they recommend. The paint came from a supplier online, TCP Global and is a House of Kolor product.

That is good paint and they have a great line of candies that will do the trick. The neat thing about using candy paint on thin is the direct reflective sun will make it vanish, and the indirect sun areas will show a little and at night they will show up on the car.

Candy paint is neat just about everyone has heard of candy apple red and how hard it is to match. Well the reason is the car is painted silver and many layers of candy red is applied to give the color. The more coats the darker the red and less metal color. The lacquer paint it would take ~85-120 coats of candy to get the look. Neat thing to do is take a very bright light on a candy color car and see what the base coat is. Now if you put just a couple coats or thin it down the base will over power the top color in heavy light and the darker it get the more the top color shows.