Colman was born Henry Cohen in Altoona, Pennsylvania to Canadian-Russian parents Abe, a businessman, and Jenny, a homemaker.
In 1949, Colman auditioned at a Los Angeles theatre, but got a job as stage manager working on three plays.
[citation needed] In 1950s–1970s, Colman worked on the NBC show Kraft Television Theatre as a production coordinator,[5] and on Dr. Kildare as an associate producer.
[7] Colman continued to work on television films including The Rape of Dr. Willis,[8] In the Shadows, Someone's Watching and Nightmare in the Daylight.
Colman died in November 2012 at his home in Los Angeles, California, at the age of 89.