In his rookie season Colliton played 19 National Hockey League games with the Islanders with one goal and one assist for two points and plus/minus 2 and 6 penalty minutes.

With the Bridgeport Sound Tigers, the American Hockey League (AHL) affiliate of the Islanders, he had 21 goals and 32 assists in 66 games in his rookie season.

[3] Whilst recovering from injury prior to the lockout-shortened 2012–13 season, Colliton struggled to find a professional club upon recovery and took the majority of the year off.

[7] On May 18, 2017, Colliton was named the head coach of the Rockford IceHogs of the American Hockey League (AHL), the affiliate of the Chicago Blackhawks.

[11] On January 30, 2022, Colliton assumed head coaching duties of the Canadian Men's Olympic Team after Claude Julien suffered an injury.