Goes green, maybe (4)
I believe the answer is:
dyes
(Other definitions for dyes that I've seen before include "Many a pigment" , "Colours (fabric)" , "turns green, possibly" , "Substances for staining or colouring" , "Colouring materials" .)
I believe the answer is:
dyes
(Other definitions for dyes that I've seen before include "Many a pigment" , "Colours (fabric)" , "turns green, possibly" , "Substances for staining or colouring" , "Colouring materials" .)