Article about Forbes who started the collection of pigments and colors at Harvard:
https://www.newyorker.com/magazine/2018/09/03/treasures-from-the-color-archive
“To experience the power of great painting and the romance of the original art work, as Ruskin passionately argued, the viewer must be able to recover, even to imaginatively reënact, the artist’s moment of creation.” (para. 14)