1. Cyan and magenta 2. Magenta and yellow 3. Magenta and black 4. Cyan and yellow
Pigments of Imagination
1-h. Vermilion, which is red like cinnamon. 2-a. Cadmium yellow. Cadmium is also used in orange and red paints. 3-d. Emerald green. In the 1860s, materials dyed using copper acetoarsenite created toxic arsenic fumes when exposed to dampness. 4-f. Egyptian blue required sophisticated manufacture. 5-c. Cobalt blue. Cobalt is also used in green and purple paints. 6-i. Mauve became hugely popular in Parisian couture. For the full story, see Mauve: How One Man Invented a Color That Changed the World, by Simon Garfield (W. W. Norton, 2000). 7-g. It took 250,000 shellfish to make one ounce of Tyrian purple, making it the stuff of royalty. A pea plant in India produces a chemically similar purple used to make indigo. 8-b. Charcoal black 9-e. Zinc white
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