Folk Art Pottery Frog Bell. Green; red; yellow; pink rose; orange; white; and violet.. Pottery. The frogs head is painted green and has white eyes and red mouth. The upper body is white and the lower is decorated with pink, white and violet strokes. The two arms hold a pick and stringed instrument in yellow, orange and rose. A clay ball clapper hangs by string from two holes in the back. It is signed, "Josefina Aguilar."