I&#x27;ve heard that the Durst family made an app for changing the lights on One World Trade Center. They guard its distribution pretty tightly, though.<p>I have a fantasy about going on a date at some rooftop bar that has a view of the spire, asking her what her favorite color is, directing her attention to the spire, and making it happen. I suppose I&#x27;d settle for changing the sign on a Portland office building, though ;)