24-05-2020, 11:46 AM
I would imagine much of the red were the same basic recipe which changed colour according to the mixture.
Over the centuries the colours will also have faded. Although if IIRC Iron reds tends to last along the best, they are stable but tends to darken if dehydration occurs. McCrone identifies the red as an iron lead ochre in a gun medium.
Over the centuries the colours will also have faded. Although if IIRC Iron reds tends to last along the best, they are stable but tends to darken if dehydration occurs. McCrone identifies the red as an iron lead ochre in a gun medium.