There used to be a white clay color at ShareCG but that has disappeared. Don Albert did create shaders of various tints here on Renderosity back in February but that has disappeared also. Your best bet, load your model into DS scene, remove any texture maps associated with the figure, select all body parts and apply a tint to the Diffuse Color under the surface tab. Use a high diffuse strength, set your ambient color to black and reflection color to white. All other settings should be zeroed. Or you can load a model and apply any Library surface shader to create a uniform look.