Black Friday After the hoopla of bowl season winds down, January is supposed to be a relatively quiet time for college football fans. Recruiting is in full swing, and there is a great deal of information for the truly faithful to digest and debate. But for most fans, January is the lull before February signing day, after which thoughts of the team are mostly shelved until fall. For the second time in four years, though, January was an active time for Colorado football. In 1999, January brought the surprise defection …