Two other notes I forgot yesterday: France seems to favour red for L1 in domestic conduit installs, you can even buy "pre-mixed" rolls of three 1.5 or 2.5 mm2 conduit singles (H07V-U) - red, blue and yellow/green at DIY stores.

And Russia and Ukraine seem to like white as a phase conductor, I keep seeing cables with white, blue and yellow/green in pictures and Youtube videos.