The Colts end zones are also painted solid blue, and just about every other dome stadium is painted green. The BIG 10 also has painted end zones. Just hollow end zones with names are easy to paint over the solid paint requires a total repair. Indianapolis likes the BIG to play it’s championship games but it loves its Colts far more.It amazes me the Falcons have a home game the day after the SECCG and the Falcons and NFL logos are on the field. The Big XII played their game at the Colts stadium but used the Colts’ turf.
Years ago I watched a Saints game right after New Year and they had Sugar Bowl markings on the field, including ALABAMA in the end zone.