INDIANAPOLIS – About the only thing that hasn’t changed is the horseshoe logo.

The Colts are adjusting to drastic moves as they go through their first week of workouts. Among the new faces: general manager Ryan Grigson, coach Chuck Pagano and offensive coordinator Bruce Arians.

There’s a new defense. The Colts will switch from a 4-3 alignment to the 3-4 that Pagano had success with in Baltimore.

There’s a new attitude. The quiet Jim Caldwell has been replaced by the more outgoing Pagano, who has distributed T-shirts with the phrase “Building a Monster” emblazoned on the back.

And there are new players. Quarterback Peyton Manning is gone. The new No. 1 guy? Drew Stanton, who recently was traded from the New York Jets. That will change, too. The Colts are expected to take Andrew Luck or Robert Griffin III with the No. 1 overall draft pick and start him.

New faces, new schemes, and it is hoped, new results after last season’s 2-14 finish.

“It’s the mentality,” said safety Tom Zbikowski, the former Notre Dame star who played for Pagano in Baltimore. “Either get with it or say goodbye.”

Defensive end Robert Mathis said he’s too old to be part of a rebuilding project and “can’t stand” the term.

“We’re all professional football players,” he said. “I didn’t come here to lose any games. I don’t have rebuilding years in me. So you come to play.”

The remaining Colts are ready to move forward.

“I like the vibe here,” linebacker Pat Angerer said. “Everybody is fired up and motivated. Everybody is excited.”

Some players will have different roles. Mathis will be a standup defensive end for the first time in his pro career.

“But it’s still being active and bringing the heat. It’s still the same,” he said. “I feel like a freshman all over again.”

Defensive end Corey Redding, who also played for Pagano in Baltimore, said his teammates are learning quickly.

“They’re soaking it up,” he said. “They are literally learning right now, but it’s just the tip of the iceberg.”

Preseason schedule

The Colts will open the preseason at home against the St. Louis Rams. The exact date and time have not been determined, but it will fall between Aug. 9 and Aug. 13.

The Colts will play at Pittsburgh on Aug. 19 on NBC; at Washington between Aug. 23 and 26 in an expected matchup between Andrew Luck and Robert Griffin III; and at home to Cincinnati Aug. 29 or 30.