Before the new system’s debut at the end of November last year, a team of workers would have to climb daily out to the lights and insert the correct filters ahead of nightfall.

Stacks of the huge colored disks have been left gathering dust alongside battered-looking former lights on the 72nd floor. No one has to go out in the snow and rain carrying the antiquated objects anymore: a click of the mouse from the building’s main computer room downstairs controls every single one of the 1,200 LEDs.

“Each one of these lights are individually addressed. We can actually target each one of these and give it an individual color,” Day said.

Already, some funky experiments have taken place atop the world’s grande dame of skyscraper architecture.

The lights flashed and pulsed in rhythm to a performance by Grammy Award winner Alicia Keys at the unveiling in November. On election night, the spire showed the vote tally in blue and red as President Barack Obama won a second term.

And this past week, ending Sunday, the public was being asked to vote on Facebook to choose the seven colors that will comprise the building’s standard palette.

But Malkin, who has also spent millions on an environmentally friendly retrofit of the Empire State Building, says there’s no chance of the skyscraper going too far down the Hong Kong route.

“It’s never going to be for a commercial purpose. It’s not a billboard,” he said.

Day also cautioned against going crazy with the tower’s new toy.

“It’s funny. With all that capability, sometimes I think the best looking shows are the simple ones,” Day said. “Nothing stands out to me like when the whole building’s blue.”