Quote Originally Posted by KiltedCodeWarrior
Ahh, so many questions, so little time. I wear brown shoes as regularly as black shoes in the same style. I just coordinate with the colors of the outfit, so I am still not sure why ghillies in brown with matching sporran, shirt, belt, etc. would be casual and not the same match in black.
Traditionally, brown was day wear and black was evening wear. While there has been some relaxing of that, such that black is often worn casually, formal wear is still black.

Additionally, since ghillies have come to be the standard for formal wear, they are expected to be black.

It's a matter of perception I think. To me, brown ghillies could be worked into something like a dancer's outfit. But since I don't care for ghillies anyway, I certainly wouldn't wear them casually.