Ecoline Liquid Watercolor Brush Pen, Set of 5 - Primary (11509900) Ecoline liquid watercolors are beloved for their bright and brillliant color The popular line of inks now available in easily transported brush pens Perfect for everything from coloring digital designs to sketching on the go Pure formula of dyes and gum arabic is mixable and rewettable Includes subtractive CMY primaries Lemon Yellow - Magenta and Sky Blue Cyan