Question: If Cheung Kong Center were to host A Symphony of Lights, what aspect of the center would be necessary to do so?
Related documents: [0]  [DOC] A Symphony of Lights () is a daily light and sound show in Hong Kong. It is the world's largest permanent light and sound show according to Guinness World Records. [END] 
[1]  [DOC] Cheung Kong Center () is a skyscraper in Central, Hong Kong designed by Cesar Pelli. It is 68 storeys tall with height of 283 m and a gross floor area of 1260000 sqft . When completed in 1999, it was the third-tallest building in the city. It sits on the combined sites of the former Hong Kong Hilton, which was demolished in 1995/6, and Beaconsfield House, sold by the Government in 1996. It stands between the HSBC Hong Kong headquarters building and the Bank of China Tower. As is common in Hong Kong, coloured lights on the sides of the building illuminate at night in intricate light shows. [END] 
Answer: 
coloured lights
coloured lights