For centuries it was of no matter whatever that a man had clothing that was pink. Not only was their no social interdiction connected to it, pink is a color readily achievable through many different sources, so it was a commonplace hue. Men who lived at all stations could, and did have clothing that was shaded to the pink, especially considering that most natural dye materials result in more muted tones than we can create now.
Somehow, through a combination of different social changes it became connected with being dissipated, probably amoral, and effete. What were these changes? How did they end up pulling the pink right off the backs of men all over the western world?
The third, and perhaps most pervasive of the influences that pushed pink out of sight for men, was the rise of Victorian morality, which restricted everyone to extremely narrow pathways of behavior, and appearance. Certainly anything that smacked of being less than upstanding would cause raised eyebrows. So pink as a color option for men evaporated utterly, becoming the exclusive province of women. And so it held for a very long time indeed.
The only places where pink survived was the occasional pale pink broadcloth shirt popular in the American Northeast, and by the 1950s, possibly a sport shirt.
It has taken nearly 200 years for pink as an acceptable color choice for men to reenter the lexicon of Attire options. And even now there remain strong feelings about pink. Many men would not wear it, for fear of the associations it still has. And all this fretting and fuss was over something that was an entirely artificial construct, based of a series of outward social changes that had nothing whatever to do with who men actually were, and are.