本评估程序描述了使用灰度对色牢度测试产生的整体颜色变化进行视觉评估。可以注意到亮度、色度和色调的个别色差成分，但不通过本程序进行量化。为了确定灰阶是否仍然适合使用，请参见附录a。可评估因任何色牢度测试而产生的颜色变化。

This evaluation procedure describes the use of a Gray Scale for visually evaluating overall color change resulting from colorfastness tests. Individual color difference components of lightness,chroma and hue may be noted, but are not quantified by this procedure. To determineif a Gray Scale is still suitable for use, see Appendix A.Color change due to any colorfastness test may be evaluated.