Created in the 1940's in collaboration with Picasso these creamy, lipstick-like pastels are rich in pigment, cover well and have outstanding opacity and light fastness. They may be thinned with turpentine and worked with a brush, are acid-free and can be applied to any surface. The 12-Color Set includes white, pale blue, lemon yellow, black, yellow ochre, burnt umber, cinnabar green yellow, green medium, mandarin, delft blue, permanent intense red and French ultramarine blue. The 12-Color Iridescent Set includes white, black and iridescent colors aluminum, pale gold, rich pale gold, rich gold, red copper, transparent blue, white, golden pearl, red gold and reddish brown gold. The 24-Color Set includes all the colors in the 12-Color Set plus azure blue, reddish brown gray, gray green, yellow deep, ruby red, raw umber, brown madder, geranium lake light, pine green, celadon green, celestial blue and red brown. The 24-Color Landscape Set includes white, gray green, yellow deep, Naples yellow, red deep, Venetian red, raw umber, burnt sienna, raw sienna, cinnabar green deep, cinnabar green yellow, pthalo green light, sap green, sap green light, mars black, delft blue, cinnabar yellow brown, violet ochre, mummy, pine green, sky blue, charcoal blue, light English red and chrome brown.