The color of light projected through the top windows of the tower can be adjusted via a free smartphone app — or users without smartphones can call a toll-free number and set the color by keypad.
The lights can be seen from around the southern part of the city or via a webcam from anywhere in the world. The installation, called Colour By Numbers, was created by artist Erik Krikortz, designer Loove Broms and architect Milo Lavén.
