This set has three different earth colors for replicating dry, fresh and wet mud effects on your model. These colors can be mixed with plaster to give more mud volume. Mud mixtures that involve plaster are best applied with a paint brush either being painted on to the surface or by loading up a paint brush with your mud mixture and using your airbrush by dispelling small bursts of air directed at your paint brush making realistic splatter effects. This set contains: _ AK-016 Fresh Mud. _ AK-017 Earth Effects. _ AK-023 Dark Mud.