V-384 REAL ORANGE (AMACO Underglaze)V 384 REAL ORANGE Real Orange Velvet Underglaze is a luminous orange color that is bright and saturated at cone 05, softens and becomes lighter at cone 5, and slightly warmer and still bright at cone 10. A clear glaze accentuates the color of the underglaze significantly at any temperature. Safety Warning Tableware producers must test all finished ware to establish dinnerware status, due to possible variations in firing temperature and contamination.