Tom Brady signaled to me and the world in that cryptic tweet that his exit from Gillette Stadium is legitimate. Now if you put 1+1 together his tweet depicts what two colors? Grey and Black! What makes it even more interesting is that Brady was seen hanging out with Raiders owner Mark Davis during a recent MMA fight in Las Vegas where even President of the UFC Dana White said the rumors have “legs”. Derrick Carr who’s been with the Raiders since 2014 commented on the speculation. “I mean, there was a lot of quarterbacks at that fight,” Carr told ESPN’s Paul Gutierrez. “And there was a lot of football players…