Light is paramount for us to see any colour in the first place, so I began creating my colour system with this fundamental thought in mind. I started with our obvious source of light, the sun, noticing the subtle changes in light from sunrise to sunset and how it effects the appearance of colour. I wanted to record this somehow, but then I began thinking about the importance of artificial light and thought it would be necessary to include it in my system. The first source of light I turn on when the sun begins to set is a filament lamp on my desk, from there I began thinking of solution of how I can combine these two essential sources of light and the ways in which they effect one another as the day progresses. I wanted to keep it as simple as possible so I took a white (white to ensure that the interference between the natural and artificial light was clearly visible) piece of paper slightly larger than A4 in size as a surface to reflect the light off of. I placed the paper on my window, positioned the filament lamp above and a camera directly in front of the paper, the time I completed this set up was just before sunset and is when I documented the first image. I was unsure if anything would be captured when photographing the paper, perhaps just a light to dark gradient but unexpectedly I was amazed to see how the colours in the image almost exactly resembled the colours in the sky at that moment in time. I decided I wanted to record the progress of how the light emitted from the sky and the filament lamp interact on this white surface from sunrise to sunset. I waited until the weather was forecasted a day with few clouds and from when the sun came up I took a photo every two hours until the sun set, producing a timeline of photos. After repeating this twice more and observing the sky enough I concluded that my final colour system was not going to be series of images showing a timeline, I found the certain hours which I thought were of most importance to take the images showing the interaction between the two lights on the paper.Sunrise, Noon, Sunset, 15 minutes after Sunset and Midnight.