Yeah, I've heard that before, but I still believe pink is naturally more feminine than masculine.
Different colors have natural qualities, and people's personalities also have some correlation to their color preferences. There's even personality/career assessment tests based on color preference like this one:
deweycolorsystem.com
In the test results you get recommended a "best" and "2nd best" occupational category, and the categories have 7 specific personality traits associated with them and they're very different on each category, so the descriptions are not horoscope-like but more like those in the MBTI profiles.