There are a few students of mine who obviously put an immense amount of planning into their wardrobe. One young lady- who is invariably late to class- is almost always impeccable.
Yesterday she came in several minutes late, as usual. She was wearing a light gray sweater and brown tights. I looked at her, and then marched her up to the office to confirm my suspicions that she was not dress-code compliant. It was a bit later when I realized that I probably would not have thought about it, if she had worn correctly coordinated black tights!
So, if you have any questions: light grey is not a good match with brown.