DecoColor Opaque Paint Markers by Marvy Uchida These markers are great for signs, posters, and all kinds of crafts because they are solvent-based and dry instantly. Colors can be blended and are removed easily with turpentine. They are fully opaque on all porous and non-porous surfaces. They are also lightfast and weatherproof, excellent for temporary outdoor signage. Point size: Broad point. Color PLUM