Dr. Ph. Martin's radiant concentrated water color is produced in an extremely concentrated form to achieve the greatest possible brilliance. Each liquid color comes in an iconic 0.5 oz (15 ml) glass bottle package with its own eyedropper. Dr. Ph. Martin's colors are primarily formulated for use in graphic arts work on paper surfaces intended for reproduction (e.g. cartooning, illustration, and other graphic arts), and are especially popular for airbrushing. Like all aniline dye base colors, they are fugitive when exposed to direct sunlight over time. For lightfast, archival watercolor use Dr. Ph. Martin's Hydrus fine art watercolor. Each set includes 14 different colors with a custom palette. 56 colors are available. Set B colors: 15B daffodil yellow, 16B amber yellow, 17B tangerine, 18B crimson, 19B wild rose, 20B cyclamen, 21B ultra blue, 22B slate blue, 23B April green, 24B moss green, 25B olive green, 26B golden brown, 27B mahogany, 28B sepia.