MILAN, Italy — Blue is the probably the most classic amongst the classic colours for menswear. But, also — according to Kean Etro who dedicated the whole Etro collection to nuances of blue — the most poetic and liquid. Philosophical dissertations aside, there is something enduringly timeless and reassuring about blue: real men cannot really get enough of it. Apropos, Etro cast various friends of the brand of many different ages, together with professional models, for the show, and christened the operation "zero kilometer casting." It made for a fun outing: the palpable embarrassment of many of the real life models gave a human warmth to the proceedings, which is another Etro signature. As for the clothes, it was the usual mix of soft tailoring and bohemian/ethnic nods, which made for a consistent line-up.