public void setRedLight(double newRed)
			{
				if (newRed == baseLightColours[RED])
					return;
				
				int difference = (int) newRed - baseLightColours[RED];

				for (int x = 0; x < width; x++)
					for (int y = 0; y < height; y++)
						lightData[x][y][RED] += difference;

				baseLightColours[RED] = (int) newRed;
			}