Burton actually announced the uniform choice from his lightly updated fan page (which still has "#PartyRock!! #Bingo!!" as its description for Community), then shared that update from his personal Facebook page, but either way, I believe both of those pages are genuine. Burton's full message:
Blue on blue Saturday night! Thats what we call a BLUE OUT IN THE SWAMP!! #BEATarkansas!
So, uh, wear blue.
The last time Florida wore blue jerseys and blue pants was for their 44-11 blowout of South Carolina in 2012, one of two times last season the Gators went all-blue. Florida also donned blue jerseys and pants in a 14-7 victory over LSU.
Florida is 12-3 in all-blue uniforms since 2005, and has not faced Arkansas in all-blue in that time, going 3-0 against the Razorbacks while wearing white tops and blue pants in the 2006 SEC Championship Game and a 2008 road game and wearing blue tops and white pants at home in 2009.