Why plastidip and not VHT nite-shades? I had thought that the rubberized plastidip would block way too much of the light... a few coat of nite-shades and then some clear would darken the tails without making them too dark.. since niteshades is supposedly just a tint... Personally I like when people can see when my brakes are on.
haven't done tails on my truck yet, but this is what I had on the charger.. was nice and dark.. (colour matched the sides since I didn't care about the side lights at the back
but one really positive thing with plastidip is that it can be removed...
How much light are you letting through? It does look really good..