Colouring substances (4)
I believe the answer is:
dyes
(Other definitions for dyes that I've seen before include "Colour" , "Colours (fabric)" , "Stains" , "Substances for staining or colouring" , "Many a pigment" .)
I believe the answer is:
dyes
(Other definitions for dyes that I've seen before include "Colour" , "Colours (fabric)" , "Stains" , "Substances for staining or colouring" , "Many a pigment" .)