Copic Original marker Colorless Blender. There's nothing like the Copic Original double-ended marker for expert blending, painting, and tone control. Use them for fine art projects, calligraphy, and more. The broad nib offers coverage for larger areas. For detailed work, flip over to the fine nib on the opposite end of the marker. The Colorless Blender is a Copic marker filled with pure solvent and no color. To produce graduated tones, touch a Copic marker and the Colorless Blender at the nibs allowing the ink transfusion. This permits you to achieve a variety of colors from dark to light as you draw with the Blender. Blend colors without smudging. Copic 0-C Colorless Blender for Copic Original markers.