Contrast - yes, I dare to use hard contrast. I should try it with the next figures. I am using Artists- Acrylics. Cadmium Yellow, Indian Yellow, Neapels Yellow; Brown Oxid, light Ocre, Brown Iron Oxid and Vyn-Dyke-Brown; Ebony Black, translucent Violett, russian green Earth, Titanium White, quinacridone red and brilliant orange; Matting Agent, Fluid Agent and Retarder. Sounds more difficult than it is.