Watercolor Dirtbag
Neutral Tint is a transparent gray (black in masstone) that is specifically designed to be neutral: not warm, not cool, not leaning toward any other color.
Typically, Neutral Tint is made from a mix of three pigments: PBk6 (Lamp Black), PV19 (any number of quinacridone magenta/pink/rose/purple/crimson shades), and PB15 (Phthalo Blue of some sort).
Manganese Blue Hue, made from the same pigment as the Phthalo Blues but designed to mimic the original Manganese Blue, a toxic color that has mostly been removed from major lines. Original Manganese Blue was a non-staining, liftable, and granulating light blue.
Phthalocyanine blue (PB15) is an incredibly intense, staining, transparent, non-granulating, lightfast pigment that comes in two versions:
(I’ll call them GS and RS in this post.)
What’s the difference, and which should you choose?