My city isn't blinky-blinky...

This is Tower Bridge, with LEDs at the top. Sensors on London Bridge triggered by Bluetooth devices cause them to light up as you walk by and show your progress:

Here's Dexia Tower in Brussels, Belgium, receiving the installation treatment:

I know the Sky Tower changes colour between sickly green and nasty purple at night, but couldn't it be done a bit better? The Harbour Bridge should definitely get "installed" as well.