I would think so, but it may need to be sealed, first? I'm picturing the oil soaking into the clay, and spreading under thee colors, making the edges muddy-ish... But, I could be way of base, too.
"The only thing...more expensive than education is ignorance."~Ben Franklin. "We can easily forgive a child who is afraid of the dark; the real tragedy of life is when men are afraid of the light." ~ Plato
Maybe experiment with small bits of the clay - I'd probably start with some form of oil that would play nice with the oil in your paints. Or, maybe a thin coat of carnauba wax? I'm not really sure why, but I am not sure of this part... I dunno... something that makes me think beeswax would be too soft or not interact well with the paint oils? Could be completely off base, there, though.
"The only thing...more expensive than education is ignorance."~Ben Franklin. "We can easily forgive a child who is afraid of the dark; the real tragedy of life is when men are afraid of the light." ~ Plato
No matter how many women are assigned to the project, a pregnancy takes nine months. Much longer than this tiny ad:
grow your own garden and build your own home in the gardening gardeners program