There are lots of web pages that talk about fiber, mostly from guys who sell it. Basically you set a GFCI protected receptacle for the "illuminator" out there in the free zone and pipe the fibers where they go. Fibers come in bundles that get sold based on how many discrete fibers are in the bundle. More fiber, more light. The colors all come from filters in the illuminator. That "lightbulb in a box" is going to surprise you when you buy it. It will be something like $800. You should be able to get some help from the distributor if you are doing this yourself but "fiber" is a specialty contractor as often as not here.
The electrician just roughs in the receptacle for the illuminator.
