Pinkish-red growths turn up on Chuck, maybe (10)
I believe the answer is:
strawberry
'pinkish-red' is the definition.
(pinkish-red in colour)
'growths turn up on chuck maybe' is the wordplay.
'growths' becomes 'warts'.
'turn up' is a reversal indicator.
'on' says to put letters next to each other.
'chuck maybe' becomes 'Berry' (musician Chuck Berry).
'warts' back-to-front is 'straw'.
'straw'+'berry'='STRAWBERRY'
(Other definitions for strawberry that I've seen before include "Soft red fruit" , "often in a jam?" , "bush" , "Summer fruit" , "Hill building Gothic" .)