I reported on the acceptability dataset for color-differences in seven popular colors used in the ceramics tile industries. The performance of seven kinds of color-difference formulas was tested with this color-difference dataset using the just acceptable color-difference predicted by Probit analysis. I found that MLAB and NC-3C are significantly better than other formulas for acceptability dataset and a revision of the weighting between color-difference attributes for CIE94 and CIEDE2000 is necessary.