Apparently, Grambling is going with some different colors for the Bayou Classic, to the tune of red and black. Red pants for a school that is black, gold and white? Very intriguing...
From a marketing standpoint, it makes little sense. When your playing such a huge game, especially one on NBC, you should probably stick to your colors because that is your brand, that is your marketing. Why present something that is not consistent with who you are, especially when this is the 'grand-daddy' of all chances to get your school and name out there?
According to SWACPage, despite this deal with Russell Athletics, there are no jerseys available.