A huge problem with the innovation here is that while it may be novel, and I would love to use one sometime, don’t get me wrong, is keycaps. Some spend a very large amount on keycaps, if not more for them than the board itself in certain cases. And the keycaps 99.9% of people own/collect/use are opaque. So you must use transparent keycaps in order for this to not just appear as normal RGB PCB underglow under normal operating conditions, which seems like it could be a sizable snag for many.