If the street is the perfect place to gauge what is going on in fashion, this week’s Pitti Uomo trade show in Florence was one fine example. The season’s must-have look appears to be anything in plaid, from scarves and shirts to blazers and pants. There’s also good news for color fanatics: vivid flashes of red and orange have surfaced, but there’s still plenty of neutrals for those who prefer a safer palette. The legions of elegant men also made a strong showing, rocking those impeccable suits while making them fun and edgy at the same time. And then there’s the wonderfully wacky dressers, who may just deserve a category of their own.