Didn’t harm the colour below the mineral spring (6)
I believe the answer is:
spared
'didn't harm the' is the definition.
I can't judge whether this definition defines the answer.
'colour below the mineral spring' is the wordplay.
'colour' becomes 'red' (red is a kind of colour).
'below' is a charade indicator (letters next to each other) (in a down clue, some letters go below others).
'the mineral spring' becomes 'spa' (I've seen this before).
'red' after 'spa' is 'SPARED'.
Can you help me to learn more?
(Other definitions for spared that I've seen before include "Saved" , "did without" , "Dealt leniently with" , "Refrained from hurting, was merciful towards" , "Avoided incurring" .)