Read "The Story of the Amulet" by Edith Nesbit online for free on Textopian. Full text with search, annotations, highlights, and AI-powered reading aids.
"Blue and red," said Jane softly, "make purple."
"Not always they don't," said Cyril, "it has to be crimson lake and Prussian blue. If you mix Vermilion and Indigo you get the most loathsome slate colour."