I had no interest in replacing all the little lights inside my daughter's truck camper (so many lights in such a little space!) and we were on a deadline for leaving on a long trip. So they are still the original RV light housings with LED bulbs. Also replaced all the dim outside bulbs with LEDs.
I prefer the "warm" LEDs. Nice that they have managed to get rid of the flicker some used to have. LEDs used to give me bad headaches.
My bus has never had an RV light in it. All residential lights running on dedicated inverters. Until my inverters filled with dust during two back to back day long dust storms (I hate the desert). Now they run off straight AC. Currently the only 12vDC "RV" thing I have is the marine water pump. I turned off the 12vDC grey water macerator and replumbed the grey water because I got tired of cleaning long hair out of the macerator.