Mankind's victory over darkness is in some ways our greatest achievement. Gone are the days when sunrise and sunset defined the limits of our day; now we can banish the shadows by simply flicking a switch. The result of our love affair with electricity, however, is that modern cities are saturated with coloured light. This creates a challenge for anyone working with light to develop an identity and focus with their work in an urban space, while remaining in harmony with their surroundings.