Have you taken a good look at the high resolution photo of The Night Watch? This image reveals unique details of the painting, including old discoloured retouching and overpaint that were applied in the past by conservators during earlier treatments where there was paint loss.

Over time, some retouching has darkened or changed colour. A detail of the face of the musketeer Jan van der Heede shows (now darkened) pinkish-red retouching that was applied during the 1975-76 restoration.