Coleman jumped into one of the oversized red kettles behind the end zones at AT&T Stadium in Arlington, Texas, after returning an interception 30 yards for a touchdown in Seattle's win over the Dallas Cowboys on Christmas Eve.
The celebration mirrored one done by Cowboys running back Ezekiel Elliott last season. Elliott also avoided a fine.
Officials flagged Coleman 15 yards for unsportsmanlike conduct; NFL celebration rules prohibit players from using props.
Coleman said his celebration was preplanned.
"I was telling the guys, if I catch a pick-six in that end zone, I'm gonna jump in the kettle and throw the ball out," he said after the Seahawks' 21-12 victory. "It don't matter. I was just telling them, that's what's going to happen. Everybody was telling me I was going to catch a pick, and it came to me. I give God the glory."
It was Coleman's second pick-six of the season. He had one in Week 4 against the Indianapolis Colts.