This 24-page illustrated booklet was produced to accompany an exhibition of recent work by Geoffrey Mark Matthews and Colin Davis, which was held at the Gallery at St. Martins, Lincoln, UK from 3 to 15 April 2018. Introduction by the poet and writer Michael Blackburn, with an essay on Matthews's Atmospheric Chambers paintings by philosopher Graham Freestone, and an essay on Davis's Colourworld project by Geoffrey Mark Matthews.