Derwent sprinkler The Sprayer adds a new creative dimension to your waterborne work. Spray water directly onto watercolor drawings to create interesting textures, color runs, and dripping effects. You can also dissolve the color pigment in a Grate ‘n’ Shake (Inktense or Watercolor for example) and fill the Sprayer to spray the color directly onto the drawing. Many artists also lightly mist their paints with water to maintain a moist work area. Brand: Derwent.