I am going to look at this from a Public Relations perspective and I think more UF fans bought tickets then Miami fans and in order to not visually look bad they are probably doing this to have people blend in together. Very similar to the way the athletic department rearranged seating sections to give the appearance from the TV Camera perspective that there are more people at the game.
UM has never worn white at home and would not change this tradion especially against UF. Now the crowd thing is a different story. Also having to wear white UM gear means people we have to go out and purchase new apparel also a benefit to UM licensing revenue. But again this speculation about why the white out.
Go Canes
Lol so there is 45,000 Mia fans at a fau game, but uf bought more tixs?
So your saying FAU brought 6000 fans to play UM, your nuts there were alot of FAU fans at the GAME. An being realistic It will be 50 to 60% gator fans next Sat. Sunlife holds 76,100 seats and UM averages 56k total fans at a game.
http://www.stateoftheu.com/2012/9/17/3346228/miami-hurricanes-attendance-the-bottom-line
An I would say 1/3 are opponent fans so that leaves roughly 37k UM fans at our games where as UF averaged 90k fans mind you the swamps capacity is 88.6k
http://www.gatorzone.com/facilities/?venue=swamp
So yeah they will have more UF fans at the game then UM fans its math there are simply more of them and they travel well as a fan base especially instate.
Look at the end of the day the white out request makes little sense other then to sell more apparel. Otherwise do what other schools do put white oversized t-shirts under every seat for fans to wear or hand them out at the gate.