It took a while to devise a colour-scheme for the base that I was happy with. I had thought about making the object source lighting effect the main feature; but this would have dominated the whole scene – as you can see from the preparatory experiment:
It would have meant having to paint the goblin shaman in exactly the same colour, probably in its entirety; which wasn’t really what I had in mind. So, I decided to keep the light effect a bit more subtle.
The base was painted as fairly standard mossy grey stone:
These were the colours used to paint the glow effect:
Object source lighting is, to all intents and purposes, extreme highlighting; designed to create an optical illusion. There are numerous methods for achieving this effect – in this case, simply blending up from dark to light; then smoothing the effect out through a glaze.
Basecoat – olive green:
Layer – olive green + snot green:
Layer – snot green:
At this point, I applied a thin wash of olive green over the snot green areas, to give them a bit of definition.
Layer – snot green + scorpion green:
Layer – scorpion green:
For the final highlight, mix scorpion green + yriel yellow + white; dot this on the tips of each ball:
Finally, apply several thin glazes of thraka green:
Glazing will darken the overall effect slightly – if you want to make the finished effect brighter, you can reapply the final green highlight; but I wanted the green areas on the base to be slightly darker than the OSL effect I’m going to paint on the goblin, so that the goblin stands out from the base.
The colours haven’t come out so well, unfortunately, as my camera isn’t great at photographing anything dark – but on a more positive note, I decided that I will add a pair of spiders to the base: they have the right combination of creepiness and coolness.