One more addition to this endless thread: I got some info from a Swiss sparky on their color coding.
Current Swiss color coding:
Phases: all colors but blue and yellow-green
Neutral: Blue
Ground: Yellow-green.
Old colors:
Phases: all colors but yellow and yellow-red
Neutral: Yellow
Ground: Yellow-red
Swiss, is that correct?

Old Italian color coding: Whatever you feel like. Think a pink phase with blue polka dots is beautiful? Go for it!
Common agreement seems to be: L red, N green, Ground yellow.