This acrylic paint from Vallejo is part of the Weathering Effects series, which is specially designed for creating realistic mud and grass effects on models and dioramas. The paint is a black color that mimics the texture and appearance of wet mud. The paint also contains small particles to give a grainy effect. The paint is easy to use with a brush or spatula and dries quickly. The paint comes in a jar with a screw cap. The paint is not toxic or flammable.