Golden OPEN slow-drying acrylics are a true departure from all other acrylics on the market. The increased working time of these colors allows artists to explore traditional techniques such as softening, shading, glazing and blending. Colors in covered or sealed palettes is usable for weeks, reducing waste and preserving mixes between painting sessions. OPEN Acrylics can be mixed with regular fast-drying acrylics for increased control of working time. A balanced set of colors ideal for exploring the slow-drying properties of OPEN Artist Acrylics. Set colors include: Benzimidazolone Yellow Medium, Naphthol Red Light, Ultramarine Blue, Permanent Green Light, Carbon Black and Titanium White Contents:6 color tubes (3/4 fl. oz./22 mL each)1 bottle OPEN thinner (1 fl. oz./30 mL)