I'm mainly using my own version of a FarmInteriorLight01, just with different colors and some other tweaks. In the case of lights, I am having a devil of a time getting these things to work right. I guess my problem is - as with most objects - finding the "right" object that works for me.
I've read elsewhere that, as with most objects, etc., that the best practice is to find the light I like, copy it, and place instances of that new light.