Well, I don’t know about a specific colour, but I do know that men were being sent home at my company, all time lost to be made up by them later, to change their ties if they were too “unconventional.” One man did fight the system, though, and it almost brought the whole company to its knees. He started wearing WWF (World Wildlife Fund, not wrestling) ties, and was sent home several times because it was “unprofessional” to have animals on a tie. So he wore an American Bald Eagle one day, and that erupted into a massive debate where one manager wanted to send him home without pay, and another said that he was “god damned” if anyone was going to be sent home for wearing a bald eagle tie, the symbol of freedom, Jesus, and our fighting men and women…and similar dreck. That turned into a series of meeting among the upper management to discuss, with no resolution pending. Then, this rebel of a guy, he started wearing ties which had other birds on them. Endangered birds, raptors, owls, and again he was sent home. This time, however, he started to raise a fuss, since the ties were technically a charity thing, and other people were allowed, once a year, to wear their United Way (which is run by Satan) ties.
This turned into a massive debate which again shook the foundations of the company to the core, and he was not sent home, although he did get a “talking to” nearly every week about how “unprofessional” a Red Tailed Hawk tie was, or how “professional people do NOT wear a tie with a picture of an owl on it. This isn’t the college dorms, you know.” Finally, after a process which must have consumed hundreds of person-hours, a very painfully-worded memo was released, to the entire company, which was solemnly read out loud over the intercom, which said that the company was “loosening its restrictions” and would allow tasteful ties which depicted wildlife in a non cartoon manner, on a case by case basis. And from that time on, that man who wore the WWF ties was the Spartacus of the Department.
The year was 1995, and I personally witnessed it. Now that’s old-freaking-school. And it wasn’t until 2000 that women were allowed to not wear hose. Hey, got to get in touch with the new millennium, right…?