Changing Light Color
To change the ambiance / color of a particular fiber, add a drop of translucent paint to the end of the fiber.
If you are putting this onto the end of the fiber that is inserted into the Lamplighter, make sure the paint is dry prior to inserting the fiber into the Lamplighter box.
To create an old world look, I use the Tamiya X-26 Orange Translucent paint, however, you may use whatever paint you like or even a colored marker.