OXERRA Chromium Oxide Green GA78M is an economical pigment designed for construction products such as concrete, stucco, mortar, and grout. This pigment is part of OXERRA’s “Good” series of chromium oxide greens, being milled to a lesser degree than the “Best” series. As with all chromium oxides, it exhibits excellent lightfastness, and UV and chemical resistance, and is considered a permanent pigment.