Black is a great color to paint engines if you aren't very good at assembling them without having them drool oil LOL. Point is, sometimes it's a PITA to find an oil leak on a black engine. At that point the leak dye is your best friend.
This ^ I have always done the Wedge/Hemi orange and it makes it a bit easier to find that leak. BUT if I had a car that was a color that clashed with orange then I would look.
