Let your imagination run free! Aqua Pens are versatile watercolor pens in a vibrant array of colors. Designed especially for painting on watercolor paper, water-based Graphix Aqua dual-tip pens offer water-based pigment ink in a range of brilliant colors. Use the contour tip for details and crisp lines or the flexible brush top to apply color. Draw or color lines and solids as you would with any marker, or blend and spread the color with a damp brush for paler hues and shading. The Metropolitan 6-Color Set includes black, gentian, light blue, aqua green, tangerine and light gray.