6 Pitt Artist Pen Pastel Resistant. The Pitt Artist Faber Castell Pens are marker pen with tip brush and calibrated with Chinese ink of different thicknesses. Odorless, permanent, and resistant to sclayges. Unlike traditional pen markers, these don't show through the paper. They are suitable for painting on various surfaces: plastic, wood, cloth, eva rubber, etc... Neutral odor, acid free, neutral pH. - Available in 60 colores; Colors: pastel gray, pastel pink, pastel green, fuchsia, pastel blue, pastel yellow.