by Connie Morris and Lorena Kloosterboer
Professional-grade acrylic paint is really, really saturated. Used full strength, its bright undertones are obscured by the sheer intensity of the colour. Mediums draw out the colour’s nuances – the bright juiciness of its essence. The light they bring ramps up the power of any colour. The transparent or translucent colour of a glaze has a seductive quality, urging us to look deeper into a composition, hunting for the elusive colour veils laid down layer over layer. The surface appearance of a painting rich with transparent layers carries a life and depth that is not present in an opaque application.
Thin mediums can be tinted with colour in any proportion to create glazes. The more medium, the more transparent and desaturated the colour will be, though the addition of the medium brings light into the surface and creates a feeling of depth. When creating a glaze, think about proportions and test how your glaze will look from wet to dry. The more medium you use, the whiter the wet glaze will be. In thin films this will not be as apparent, but if you are applying a thick glaze layer, there will be a significant change as the medium clarifies and the colour asserts itself.