This is how it looks with my camera. It fails to show you how dark it actually looks... my recommendation is get the ones with color. As the other member posted he will get blue for his black Z. I think the color will be more noticable than the tint. As far as best describing how the black tint looks... it makes the Z's headlights look like a gunmetal grey. The tint isnt really that dark if your trying to compare it to spray tint (VHT) which is obviously more darker (and permanent) than this product.
On a side note... my headlights had a couple of nix and scratches since my work commute is long. I did notice that in those areas the Eurolight made little dots and seeped into the minor scratches. Also, make sure u let it dry in a place where bugs wont be attracted and get stuck on the headlight while it dries lol.