Here I have set up a small scene and have begun to try out some ideas.
Here I begin by really making my world dark with white light from the lamps to light up a section of the mock up set. (no 1) I then go about lightening this up and adding some background details that begins to blur/wade out to try and get depth and atmosphere. (no 2-3) I then add a little colour shading to this (no 4). I quite like the idea of maybe the hole world is colours in tones yet the lights actually are the only thing coloured and colouring the world. I also like the idea of the world becoming black as you take out the lights as well. no 1 maybe a little to dark for this but no 2 may work well as you can still see the set it self.
Moving onto adding more colour to try and get a more painterly feel, this dose not work for me, it just becomes a distraction from what the player should be looking at. (no 5-6) no 7-8 are not bad but i get no sense of atmosphere or depth unlike the 1st 4 images.