IB LED was based on the concept of circadian rhythm and circadian lighting. This concept is very important as the design for the IB LED greenbuild exhibition was also based on this. This concept is about how our lighting adapts to the natural light outside. Our lighting would change colour/temperature according to the atmosphere and natural lighting outside. The main tunnel at the beginning of the exhibition is a walk-through experience of the change in the colour of lighting based on the time of the day. IB LED calls it 'light-wellness' - better for our body, mind and well-being.