But aren’t fluorescents bulkier and heavier? It’s not just how efficient they are, it also matters how much they weigh. Fluorescents also have a rather unnatural an unflattering discontinuous spectrum that tends to be greenish. LED’s can be made to look more like daylight.
It’s possible to fiddle with the spectrum of a fluorescent by using a different mix of phosphors. The better phosphors cost more. An RGB LED array (I don’t know if this craft is using that kind, or just a plain “white” excited-phosphor light) would indeed have the ability to shed different hues of light.