Some Research
I did a little research on these paints today and here is what I found:
Genesis is a subsidiary company of The American Art Clay Company. AMACO makes polymer heat set clays like FIMO and Sculpy. These clays are defined as Thermoplastics as they remain soft and pliant until heated to 250 degrees when they polymerize and become firm.
The pigments used for these clays are industrial grade pigments made for plastics. They are not particularly UV resistant or light fast.
Now, the Genesis paints are clearly an offshoot of this thermoplastic technology. I doubt that they contain any natural oils at all, but are instead a plastic product. I would hope that they select pigments for these paints that are light fast, but only experimentation and time will tell.
If you own these paints, then I would recommend taking your palette and painting and drying a test panel. Set it in a sunny window and see your results over several weeks and months. Sculpy and FIMO fade pretty dramatically under sunlight. That is not to say that the Genesis paints will, but testing them would not be a bad idea.
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