I tried Z on my black cars and also lose the richness of color that I desired. I switched to
Blackfire and have been completely satisfied with the return of depth, basecoat color enhancement and wetness. Also with BF2 one can top with P21S or a new topping glaze ( non abrasive and sealant free) I am testing from Super Shine ( Power Shine). This is an option that one is able to do with BF2 to enhance the depth even more. My black cars have never looked blacker.
