Paining "Moroccan pottery"? - moroccan ceramic vases

Well, I'm a very creative person, especially when I'm on canvas. I recently painted on glass (equipped with a lamp buy) and identification as a bit of painting ceramics. I have several pieces of pottery from Morocco, but I wanted to know whether the use of specific colors. Do they have the pottery in the oven after the painting at hand to bake? or just paint and varnish? ...
Please give me an idea!