Don’t be afraid of pink. People rarely wear it in office settings, probably because they want to be taken seriously and pink still carries a girly connotation, (though this wasn’t always the case) and of course, we still live in a society that considers all things feminine to be negative or at least inferior to masculine things.
Black, on the other hand is utterly gender neutral, and is, of course, itself a neutral. Black is classic, but equally modern. Let’s face it, if all the colours (and neutrals) were to fight for dominance, black would win, but pink would put up a good fight.