The Seahawks were wearing gooey green uniforms, and in the end they were the ones that got slimed.
On the Bears' final drive with under two minutes remaining, Cutler completed all three of his passes, the last a 36-yarder to Hester.
'Hawks safety Deon Grant tried to level Hester but flattened his teammate Travis Fisher instead. With both Seahawks on the ground, Hester sprinted in for the go-ahead score.
Cutler finished 21 of 27 for 247 yards and three touchdowns and one interception.
Seattle was playing with seven injured starters, including QB Matt Hasselbeck with a broken rib.
Even so, the game was back and forth for the last two quarters.
After going down 13-0 in the first half -- and a near turnover at the 1-yard line by Matt Forte -- the Bears rallied just before halftime with a pass to Greg Olsen in the endzone.
In the second half the Bears scored first on a spectacular catch and run by rookie Johnny Knox, who juked two defenders and dove in for the score.
Seattle didn't score on its next drive, owing to a missed pass through the hands of Deion Branch, and a missed field goal by Olindo Mare. Seattle QB Seneca Wallace then threw a pick; the Bears converted that INT into a 37-yard field goal off the boot of Robbie Gould. Bears went up 17-13.
In the fourth quarter the Seahawks scored two field goals, including one a forced fumble off Cutler, and led 19-17 with 5:17 remaining.
That's when Cutler led the Bears downfield, finding Hester on a slant.
After an abortive Seahawks drive that ended with an overthrown pass, Cutler kneeled down for the victory.