For your taillights you can use VHT nightshades. It comes in a spray can. I have a can but havent done it yet. I have heard that if you use it on headlights or fog lights it gives the output light a red tint to it
They also make a different kind of tint for lights but I havent used it. My brother tinted his marker lights on his Mustang with 35% window tint and it has held up for almost three years now but they are only curved a little bit and are set back in the bumper so they dont see nearly the abuse the lights on a ram would.
Like said plastidip is common because it can be easily removed