A sculpture in green fluorescent light by Dan Flavin, titled greens crossing greens (to Piet Mondrian who lacked green), dated 1966.

Dan Flavin 

greens crossing greens (to Piet Mondrian who lacked green)

, 1966

Green fluorescent light

First section: 4 ft. (122 cm) high, 20 ft. (609.6 cm) wide 
Second section: 2 ft. (61 cm) high, 22 ft. (670 cm) wide

© Stephen Flavin/Artists Rights Society (ARS), New York

A sculpture in green fluorescent light by Dan Flavin, titled greens crossing greens (to Piet Mondrian who lacked green), dated 1966.