Each of the so-called Lumi-pops has a diameter of close to 1.5 metres. The installation is based on the additive and subtractive colour mixing techniques of the colour theory. The coloured fluorescent tubes, which are chosen to match the primary and secondary colours, and colour gels are selected by design from the visible spectrum. The precise wavelength is filtered through the fluorescent tubes and then filtered again through the purple tint Perspex. The overall lighting effect is one of white light in the space, while each individual luminaire appears to be a different colour.