That's funny.
I remember hearing many years ago about a study that showed across sports that red jerseys bring more success. Something about being intimidating.
Could be just the sheer numbers. The vast majority of main team colors are either red or blue in NA pro sports.
Red: Wings, Habs, Yotes, Flames, Panthers, Canes, Hawks, Caps, Devils, Wild, Sens, Heat, Hawks, Bulls, Raps, Cavs, Pistons, Blazers, Rockets, Cardinals (NFL), 49ers, Buccaneers, Falcons, Wasington (NFL), Red Sox, Indians, Angels, Braves, Cardinals (MLB), Nationals, Reds, Diamondbacks
Blue: Jets, Leafs, Jackets, Lightning, Isles, Rags, Sabres, Avs, Blues, Oilers, Canucks, Clippers, Mavs, Grizzlies, Warriors, TWolves, 76ers, Wizards, Pacers, Hornets, Magic, Knicks, Jazz, Pelicans, Seahawks, Panthers, Cowboys, Lions, Pats, Jays, Rays, Royals, Twins, Astros, Mariners, Rangers, Mets, Phillies, Marlins, Cubs, Dodgers
If you want to be unique just don't pick red and blue. Almost all teams tend to have some combo of red/blue, blue/white or red/white. Yellow is probably next up in terms of how common it is.
Greens, purples, teal, turquoise, grey, pink, peach are pretty rare.