Designers Gouache paint is similar to watercolour paint, but it is opaque rather than transparent. Popular among designers, illustrators and commercial artists, Winsor & Newton gouache paint is perfect for creating bold, vibrant artworks. All these tones are intermixable and you can pair them with our watercolours for a flat, matte colour effect. Developed for professional designers working on illustrations for graphic reproduction. It is also widely used in fine art painting, both on its own and with transparent watercolours.