Matisse Fluid Acrylics, have a very smooth, runny but slightly dense viscosity. Being highly pigmented, the colours will appear dark and intense on initial application but can be spread easily with a brush or mixed with water to reveal the colour graduation. The intensity of the colour is what makes Matisse Fluid ideal for tinting. the consistency allows precise drop-by-drop addition to any of the Matisse range of acrylic paints and the precise ratio of tint to paint can be easily replicated.