Below are possible answers for the crossword clue Colouring matter.
3 letter answer(s) to colouring matter
DYE
a usually soluble substance for staining or coloring e.g. fabrics or hair
color with dye; "Please dye these shoes"
7 letter answer(s) to colouring matter
PIGMENT
a substance used as a coating to protect or decorate a surface (especially a mixture of pigment suspended in a liquid); dries to form a hard coating; "artists use `paint' and `pigment' interchangeably"
acquire pigment; become colored or imbued
any substance whose presence in plant or animal tissues produces a characteristic color
color or dye with a pigment; "pigment a photograph"
dry coloring material (especially a powder to be mixed with a liquid to produce paint, etc.)
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