Mayco UG022 Spring Green Opaque Underglaze Opaque Underglazes Oil Slick develops a mix

Oil Slick develops a mix of dark blue

Peacock Matte develops a matte copper color with various iridescent shades of blue and purple following a proper raku firing

the chances are that it is this style

Glaze Compatibility - Stoneware glazes work well with each other and other Mayco glazes

if you are not getting the desired metallic results you can adjust your glaze application

Mayco UG022 Spring Green Opaque Underglaze Opaque Underglazes Oil Slick develops a mixFor use on clay or greenware: apply one or two coats and let dry and bisque fire to shelf cone 04. If desired, apply a clear or colored translucent glaze and fire to cone 06. For use on bisque: apply one or two coats and let dry. Apply a clear or other colored translucent glaze and fire to cone 06.