Any yellow color team would, of course, be an issue. This would be Georgia Tech, but it is an away game.
Any red based color team that has a large travelling fanbase sticks out markedly in the stadium (esp since ND fans tend to wear 3 different background colors (Blue, green, and white (in the Fall) ).
The teams with red base this year at home where the shirts are worn are are...Miami of Ohio, Louisville, and Stanford. None of these have huge fanbases that travel, though perhaps Louisville could travel given the short distance.
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