Tombow Irojiten Color Dictionary Pencils. Perfect for collectors, the Irojiten is a luxurious and complete color pencil collection with an outstanding look and feel. These 30-pencil sets are packaged in book- like cases that make the set look like an elegant color encyclopedia. The pencils feature an off-white finish with colored ends that match their lead color. The packaging and the high quality of the product line made these pencils an all-time classic. Available in a variety of volumes: each sold separately. Imported.