http://b4hntuy3fimfh2227vf4f74emnya7p35i5brtqujs6leqvtclfwvjbqd.onion/doc/goethe/goethestheoryco01goetgoog/goethestheoryco01goetgoog_desc.html
"When a yellow colour is communicated to dull and coarse surfaces, such as common cloth, felt, or the like, on which it does not appear with full energy, the disagreeable effect alluded to is apparent. By a slight and scarcely perceptible change, the beautiful impression of h're and gold is transformed into one not undeserving the epithet foul, and the colour of honour and joy reversed to that of ignominy and aversion.