I know that lufty changed the switch direction of some (if not most) overhead panel switches for its 737 as they did not comply with a local industry norm for switches. Makes for a quite confusing sim session if you use some of their simulators. Anyway, over here the light switches in houses are build the other way round than in the US, switch them down means on, and the other way round. And yes, that is standardized and of course regulated...