The Sharpie Blue Oil Paint Marker is a great addition to your collection. It can write on virtually any nonporous surface, including plastic, metal, glass, wood, stone, and more! Its glossy and opaque paint-based ink is AP Certified non-toxic, xylene-free, quick-drying, and water, fade, and abrasion-resistant. It can be used on light or dark papers, but on dark papers it will work best on glossy or coated papers. Some colours do not show up well on regular, non-coated dark papers.