I have wondered about this. I am afraid mine will start to lay just in time to stop (or perhaps not lay at all this whole year?). I hope not ... I need the eggs!
Right now I leave a porch light on, that just shines into the coop (not for day engthening, more like a night light). It gives enough light to see very dim outlines. I don't know how well chickens see in the dark, but it lets me see them somewhat. They all settle and stay put with more light than that though, so maybe it's no point at all. I just like being able to see around the coop when I look out.
trish