Nevermind, found it.
Just for the mass wisdom:
From:
http://www.nhluniforms.com/
(1950s section)

During the 1950's, rules were modified dictating which jerseys the teams wear on their home ice. For the 1951-52 season, the league mandated that the home team wear their white sweaters. Four seasons later, the colored jerseys became the home jerseys. That would be the standard for the next 15 seasons, until the league did an about-face and ordered teams to wear white at home in 1970.

and white it was until just recently . . .