The Arts and Crafts movement was a response to the social and aesthic changes brought on by the Industial Revolution.
Artists in this movement spent a lot of time focusing on quality, appeal, and design because they were discontent with the cold, mechanical, and indifferent face of new 19th century designs.
you need red and blue shades that are free of yellow or green pigments because it will turn what should be purple into this dark ugly looking murkery grey purple.