The new World Trade Center tower, which now stands 90 floors, will glow with holiday lights beginning Tuesday.
The Port Authority said construction workers from the tower's electrical contractor volunteered time and put cellophane wrapping on interior lights to create the colors.
The building is expected to reach its height of 104 floors, or 1,776 feet, in the first few months of 2012, and the tower is scheduled to be finished by the end of 2013.
The glass facade has been built up to the 65th floor.
