Back in May of this year, Cubs second baseman Ben Zobrist received a written warning from MLB regarding his signature black throwback cleats that he liked to wear for day games. This came right on the heels of Cleveland Indians pitcher Mike Clevinger receiving the same slap on the wrist for wearing his own brightly-colored custom cleats.
The internet collectively scratched their heads about how absurd it was for the MLB to crack down on this minor rule, allowing players the tiniest bit of personal expression on the field.
It seems that MLB was listening.