Product display discoloration (1 = tan to brown to 8 = very bright red) had high and significant (r N 0.5, P b 0.01) correlations with beef redness a* (0.85), chroma (0.81), R630 − R580 (0.92) and TBARS (−0.71), which were similar to correlations found for product surface discoloration since both visual parameters were highly correlated