What colour is a ghoul???
I spent rather a long time thinking about this, ghouls are mortal and not technically undead. They inhabit crypts and graveyards and the like but aren’t zombies. I watched a whole load of YouTube videos and quite a lot of people are painting them in a necrotic flesh type colour, rather than in a colour of someone/thing that never gets out in the sunlight.
I, therefore, am experimenting with a grey undercoat for the skin tone with a flesh coloured wash. We shall see how that comes out.

I managed to get the green looking the colour I wanted, it took a while!

I basically made another base coat of Phtalocyanine emerald with some khaki, then built up from there.