A coated substrate is disclosed. The coated substrate includes a substrate and a coating composition over the substrate comprising at least one metal based layer selected from tungsten, chromium, tantalum, molybdenum, aluminum, niobium, and mixtures and alloys thereof; and mixtures and alloys of cobalt and chromium; and at least one dielectric layer including SixNy, where x/y ranges from 0.75 to 1.5, over the metal based layer. The ΔEcmc (1.5:1) (T), ΔEcmc (1.5:1) (R1) and ΔEcmc (1.5:1) (R2) of a non-heat treated, coated substrate as compared to a heat treated, coated substrate according to the present invention are no greater than 8 units.