If multiple coatings are made the color will become darker. As one goes towards the right of the image, with a single coating, double coatings, and triple coatings, a dark color will develop. All our items are Brand New & 100% authentic. All products are quality checked. I will be glad if you use it.The item "Copic marker ciao 12 or 24 or 36 color set, Sketch Pen illustration" is in sale since Wednesday, April 27, 2016. This item is in the category "Crafts\Art Supplies\Drawing & Lettering Supplies\Art Pens & Markers". The seller is "jp2015-matub" and is located in kawaguti-si, Saitama-ken. This item can be shipped worldwide.