Kudos Roger!
Looks like the type of work I am often accused of over building. (By the boss, as its being done.) But anything less, IMO is not a complete install. (By the time its done, the boss comes in and gets kinda weepy with pride looking at it.)
Its also the type of work that if someone comes in to add to it, they feel the need to adhere to the same quality, and standard. To do otherwise would make them look inferior.
As for labeling conduit, they make some stickers for that type of thing. But probably would not be half as visable as the paint, and cost 4X's as much.
Anyway, darn nice work!