Why did the Italian Soccer team wear blue jerseys in the World Cup? Their flag colors are red, white and green

Answer 1

I dunno if you noticed, but none of the teams in the WM had green in their outfits, regardless of what colours were in their flags.

I think it was so that the broadcasting companies could project computer graphics onto the field e.g. for free kicks, or half time scores, using the grass as a "green-screen" backdrop. If the players had been wearing e.g. green shirts, you would have got a whole bunch of legs and heads running round the field, with invisible torsos!

You used to get a similar effect back in the '80s, when TV weather reports were in the process of switching from maps with stick-on clouds to blue-screen computer-projected maps. Sometimes the weathermen forgot, and wore blue items - and the map got projected on bits of their bodies!