Some treatments with glycolic acid can shift the Tonality of hair color, so
a throrough consultation on these points is crucial," Sprinkle tells us.
So any change in their Tonality, especially when this change tends to be maintained over time,
can become a signal and therefore a cause for concern.
Of course, there is a whole epoch between these artists,
and David sees more interest in the Tonality of color, and also neoclassicists are distinguished by fewer details,
but, nevertheless, these are subtle differences.
In the letter he explained that each painter had his favorite color palette,
and that those favorite tonalities were a way in which the artist could go
through the darkness of his heart to find light.