While we do not print in metallic ink, we do have CMYK codes formulated for our metallic cardstock colors. These codes are the closest match in a matte color. If you choose a metallic paper to print on this will result in a shimmery effect on the entire piece. As with all of our products, it is best to view a physical sample prior to placing the bulk order. Here is a link to our samples order page, where all sample orders include free shipping, worldwide.