The majority of paint – by - numbers kits utilize acrylic paint. Since acrylics dry in a short amount of time, multiple layers can be added quickly. They can be cleaned up with soap and water which makes them even more convenient. A variety of colors are available, and new shades can easily be created with mixing or diluting. The durability of the paint also guarantees that the artwork will not fade for a long time. Some advanced kits may offer a more professional look by including artist-grade acrylics.