These inks are perfect for permanent background washes for airbrushing on a wide variety of surfaces and for a myriad of design and fine art applications too long to list here. There are 24 colors in the line but you can make your own colors as they are easy to blend together. You can reduce color strength by just adding water without reducing the permanency of the color.
They dry to a rich velvety matte finish that allows for working over as well as for providing easily photographed reproduction art. To richen up the color, you can glaze using a gloss spray varnish or any acrylic based gloss varnish. Black and white have incredible covering power while colors are ideally transparent.