Tamiya Mini Acrylic XF-24 Dark Grey 

Tamiya acrylic paints are made from water-soluble acrylic resins and are excellent for either brush painting or air-brushing. These paints can be used on styrene resins, Styrofoam, wood, plus all of the common model plastics. The paint covers well, flows smoothly, and can be blended easily. Prior to curing, paint can be washed away with plain water.