These brush markers contain a dye-based transparent ink that blends easily. Fine, medium, or bold strokes are easy to achieve, simply by varying the pressure on the brush nib. Use the Blender pen to create seamless washes & color gradations. Yellow, Orange, Pale Orange, Woody Brown, Dark Brown, Brown, Vermilion, Red, Pink, Burgundy, Fuchsia, Lilac, Iris, Purple, Sky Blue, Peacock Green, Yellow Green, Green, Sap Green, Fresh Green, Blue, Light Sky Blue, Prussian Blue, & Black.