is there such a thing as an etsy genuis? if so, this is it.
Don't wear red on the day of the OSU game, other than that anything is acceptable (obviously no wearing of OSU shirts in general - but this should be common sense). (There are someother red teams I would also recommend never wearing any of their gear: #1 would be StL Cardinals)
As for what to wear to the games - I have always been on the side of wear whatever official gear you want to the game. You pay 80 bucks for a Harbaugh jersey you have the right to wear that even if it is supposed to be a "maize out."
I don't think the maize out is a great idea because 1. things like a black out, Nebraska's sea of red and the penn st white out are easy to do - because everyone has a red, black or white shirt in their closet. Not everyone has a maize shirt, even if your an M fan. And like I said before a lot of people want to wear their expensive jersey to the game, which is perfectly fine.