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Scratch and mar visibility is measured through a purposely designed black box. The present method for the quantification of the scratch visibility agrees with human eye evaluation. The color of the material has a crucial effect on the scratch visibility. Experimental procedure to measure the scratch visibility is shown in the graphical abstract: a) the scratched sample is located into the black box setup; b) the images taken in the step "a" are analyzed to quantify the onset of visibility; c) the results are quantitatively compared to the human eye perception of the scratch.