If you want to add atmospheric or emotional punch to your work, then
squeeze some transparent Perylene Green onto your palette. It exhibits
an almost black mass tone that spreads to a beautiful blue/green wash
without producing mud – a color perfect for delineating shadows or
creating moody landscapes, ominous horizons and stormy seas. A
medium-staining pigment with intensity and softness, Perylene Green is
highly soluble and easy to use. It glazes under or over other colors ~a
very cool color~ allowed one of our more demanding artist/testers.