Primary and Secondary Colors

(source – video made from archived page with flash activity that is no longer going to be supported)

How many primary and secondary colors can you find in the following pieces of art?

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Gabriel Orozco, Light Signs #3 (Korea), Walker Art Center (source)

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Fernand Leger, Plongeurs sur fond noir (Divers on a Black Background), Walker Art Center (source)

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Franz Marc, Die grossen blauen Pferde (The Large Blue Horses), Walker Art Center (source)