@micahflee
While I appreciate the intent, I can see a potential issue with imposed pressure to disclose your preference publicly. If 50 people wear white and 2 people wear red, those 2 people will also become noticeable in a way that may be the opposite of what they wished.
If you do not read the fine print, you may also miss that you will still be included in large group photos and the official video recordings. In those instances, red will also be easier to notice.