Miracote MiraGard Colorbond XL 7021-XL-2102 5 gal Pail #2102 Copper Kettle Acrylic Coating. Miracote MiraGard Colorbond XL is a single component, 100% self-crosslinking pigmented acrylic coating specifically designed for use as a top coat for Miracote MPC, MiraFlex XL, MiraFlex II, MiraFlex ME and other Miracote products/systems. It can also be used as a protective coating over properly prepared conventional concrete and other types of construction substrates. MiraGard Colorbond XL exhibits a low sheen finish and provides excellent durability and weathering properties.