SW-130 Copper JadeCone 6: Copper Jade fires to a gloss finish, producing colors that can range from brown greens to creamy tan hues. Color breaks dark and can pool into red tones where thick. This glaze yields complex surfaces through movement and color variation. Cone 10: Color changes to a red brown with some black copper mottling. TIP: One coat will produce dark, greenish tones, thicker coats will add greens. Thickest applications will result in metallic red hues.