These watercolors are extremely concentrated, giving great brilliance and radiant tones in illustrations. They may be diluted with water and will blend freely. Radiant colors are less transparent than Synchromatic colors. In .5 oz. dropper top bottles. Set "D" contains Sunshine Yellow, Sunset Orange, Sunset Red, Sunrise Pink, Tahiti Red, Fuchsia, Raspberry, Ice Green, Ice Blue, Peacock Blue, Iris Blue, Indian Yellow, Tiger Yellow and Coffee Brown.