The 1960s, Strong Verticality and a Return to Colour

Coulon discovered New York. The visual shock was huge. His grid-like compositions were now held in structures that aspired to the vertical. Small squares of pure color applied with a flat brush, vertically and horizontally, formed a close-packed grid, a shift in form enriched by the lyricism of the colors, which progressively added warmth to the composition, without carrying any meaning outside the work itself.

Lydia Harambourg, "Jean-Michel Coulon" (published by Gourcuff-Gradenigo)