In 1972 in the introduction to his retrospective exhibition at the Whitechapel Gallery, Heron said: "Colour has become my most passionate and persistent concern. It is the interaction of colours, the 'meeting lines' or 'frontiers' between colours which are crucial to an apprehension of the actual line of the areas of colour."
In this print Heron exploits the effects of juxtaposing areas of complementary colour, blue and orange, as well as introducing other shades of green and dark purple. Despite the unmodulated flatness of each colour which the inks used in screen printing produce, the irregular boundaries of colour in some areas help to create the illusion of spatial depth and movement.
Heron used the process of screenprinting to produce these prints in order to obtain the vivid colours he wanted. A screenprint is produced by using the basic principle of a stencil, in that it is a method by which paint is brushed over a screen so that the colour penetrates those parts of the screen that have not previously been masked. The screen is made of fine silk stretched on a wooden frame and the design is masked using paper or lacquer.
(Due to copyright restrictions, we are unable to publish images of the artist's work online.)