12-26-2014, 01:59 PM
I'm no expert at light myself, but I believe if that purple light were the only light source, everything would be tinted that shade of purple. So I think you first have to establish the light sources affecting the figure and the shadows that result from it. Then consider what material his clothes and armor are made of and color those materials accordingly. A background isn't necessary, but with the right lighting placement, you wouldn't need it. Remember that things always become darker the farther away they face from the light.