For my daughter''s upcomming wedding reception, she wants to decorate the tables by sprinkling coffee beans around the candles & vases on the white tableclothes. Since the beans are not for consumption we were considering buying green coffee beans & roasting them ourselves to save on cost. Our question is this: Does anyone know if the oils from the coffee beans will stain the white table linen? We cant have that happening & I hate to invest the time & money into purchasing them, roasting them, and then finding out that they will leave a stain on the white linen''s. Any suggestions? Is this even a concern?