Goethe and Herbin - paintings in ideal colours

A popular show of Goethe’s Contribution to Optics (1791), based on observations he made with a prism and black and white pictures. The Frensh artist Auguste Herbin in 1949 suggested using the same methods for letting light itself do the colouring of paintings. Of course, this is a suggested exhibition, in model scale. For the colouring of the pictures a 30 degrees flint glass prism has been used. If you want to know “what is so ideal about ideal colours?“ please consult the original manuscript for the video: