Loading a brush with two colours side by side. In order to double load, use a paint of creamy consistency, and drag one edge of the brush through the lighter colour until the edge is filled with colour; then stroke the clean edge of the brush through the darker colour in the same manner. Once the brush is loaded this way, blend the colours at the centre of the brush by stroking on the palette. Using this technique, each brushstroke deposits a gradation of the two blended colours