Created a white Light. Following the tutorial on the blog, I found the settings that were recommended to be slightly under powered, instead I increased the diffuse multiplier from 20 to 500. i Found this value to have a bigger impact on the model. This image's config spec was set at very high, as you can see, the model is slightly grainy and not smooth. 

Changed the color of the light to a deep blue/ purple colour. this made the model stand out in the low light. I also reduced the config spec settings to high, the model is much more smooth.