The tower changes its lighting scheme on holidays and to commemorate major events . After the 95th Grey Cup in Toronto , the tower was lit in green and white to represent the colours of the Grey Cup champion Saskatchewan Roughriders . From sundown on August 27 , 2011 , to sunrise the following day , the tower was lit in orange , the official colour of the New Democratic Party ( NDP ) , to commemorate the death of federal NDP leader and leader of the official opposition Jack Layton . When former South African president Nelson Mandela died , the tower was lit in the colours of the South African flag . When former federal finance minister under Stephen Harper 's Conservatives Jim Flaherty died , the tower was lit in green to reflect his Irish Canadian heritage . On the night of the attacks on Paris on November 13 , 2015 , the tower displayed the colours of the French flag
attacks on Paris on November 13 , 2015
November 2015 Paris attacks
CN Tower