Colleen Gray was a two-sport standout athlete while at Humber College from 1989-1993. As a volleyball player, Colleen was a two-time volleyball OCAA all-star for her outstanding play. She was also honoured as a CCAA all-Canadian in the 1991-92 season.

Not content to play just one sport, in her final year at Humber she also played basketball in addition to volleyball and she and her team won the OCAA championship. She was named an OCAA and CCAA academic all-Canadian award winner.

In the 1992-93 season, she was selected as the Humber College Female Athlete of the Year and was inducted into the Humber Hall of Fame.