Two thoughts: One, Darth Vader and the Bounty Hunters look like they're going "Hooray!" which is probably what they did at the end of "Empire".
Two, the Rebel Command center looks like minutes of play.
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It's been too long without some fashion mockery and while these gents score high for truly being "Plaidstallions", they lose points for not having their belts match their shoes.
Source: 1975 Sears Catalog
BTW, I wanted to confirm that this is indeed Gayle Sayers, Bob Griese and Tom Seaver modelling these fine outfits. I was born without a sports gene so I have no clue