Chore mixing pigment for paints (5)
I believe the answer is:
ochre
'pigment for paints' is the definition.
'ochre' can be an answer for 'pigment' (ochre is a colour). I'm not certain of the 'for paints' bit.
'chore mixing' is the wordplay.
'mixing' indicates anagramming the letters.
'chore' is an anagram of 'OCHRE'.
Can you help me to learn more?
(Other definitions for ochre that I've seen before include "Earthy pigment - light brownish-yellow" , "Yellow-orange hue" , "Red or yellow pigment" , "Yellow/brown/red pigment" , "natural colouring" .)