Crafter's Companion Spectrum Noir AquaBlend Pencils Essentials. Spectrum AquaBlend's rich pigment formulating gives you the performance of artist's watercolor in a pencil. They are fully water-soluble for unsurpassed blending and coverage with no staining or residue. Ideal for use at home, in the studio or for sketching on the go! This package contains twenty-four watercolor pencils in assorted colors within one 7 3/4 x 9 1/4 x 5/8 inch tin case.