The approach of the 'achroma series' ('achromatic', from ancient greek 'ἀχρώματος': without colour) is, to focus on the formal thinking of the creative process by showing all of the painters decisions, movement and direction - but without any color or black&white contrast. All the paintings are therefore completely desaturated and without any contrast, resulting in a middle gray (50% gray, also known in photography as 18% reflectance - the tone of the photographers gray card).
Without colour and contrast this paintings are also 'social inclusive' - as they include the blind and visually impaired bringing the painters creative process to live solely through the structure of the brush on the canvas, witch is tactile tangible as well.