The Hobonichi Techo uses 12 soft colors across the book. TheTSUKI no IRO stationery series incorporates these colors intosimple designs. A set of six Uniball One pens selected to matchthe print colors used in the Hobonichi Techo. The JulyDecemberset includes: July Nemophila Blue, August Blue Black,September Cappuccino Brown, October Violet, November Emerald, December Red. Comes in an original case.