These pigmented, water-based acrylic paint markers make opaque, lightfast marks on almost any surface including canvas, paper, wood, metal and glass. Once dry, the ink is waterproof. Each set contains a variety of colors in either a fine .5mm or medium 2mm nib. The 2-color set includes silver and gold. The 6-color set includes red, yellow, green, blue, black and white. The 12-color set includes red, yellow, green, blue, black, white, magenta, orange, light green, light blue, purple and brown.