Koigu Premium Merino (KPM) Solid colors are pure hand painted beauty! The beauty of hand-dyed yarns is that each hank is a unique work of art, so please be aware that there can be a variation in coloring, hue and saturation, even within the same dye batch. Each dye lot is painted individually and then heat is applied to fix the dyes. Dye lots are rinsed and hung on rods to dry.