We're seriously going to regret this, as we've been trying desperately for years to get off the e-mail list that tells you every day, whether or not you want to know, what color the Empire State Building will be that night — and why. But the fact that it's going green tonight Thursday night in honor of 25 years of the Teenage Mutant Ninja Turtles is just too stellar to ignore. [City Room/NYT]