Determining the acceptability of a color in decorative glazing is a process that requires participation and cooperation from the entire supply chain. A basic understanding of perceived color and the factors that affect it are critical to the success of establishing a color standard. This document offers a brief overview of perceived color and measurement methods that can be used in establishing a color standard for decorative glazing. The original version of this document was published in 2017. This version of the document was updated and published in February 2022.