It appears to be a normal white candle. But once lit, the centre of the candle begins to change colours as it burns: first to yellow, then orange, red, purple, and finally to blue. These colours reflect faintly off of the white wax surrounding the flame.
The transition of colours is inspired by the shifting shades of light that paint the sunset sky. Each colour has its own accompanying scent: bergamot, lemongrass, sweet marjoram, lavender, and geranium. Not only does the candle provide illumination, but the transition of colours also serves as a reminder of the passage of time.