Prima Marketing-Art Basics Light Paste: Opaque Matte. Opaque, thick, but airy, acrylic paste with a white matte finish. Permanent. Adds light, dimensional, flexible, texture to a project. Works great as a work for custom paste or matte paint. Grabs color from inks, sprays or paints easier than other mediums. Water-based, archival-safe, Non-toxic. This package contains one 8.5oz jar of light paste opaque matte.