Progenitor concealing eye colour (7)
I believe the answer is:
magenta
'colour' is the definition.
(magenta is a kind of colour)
'progenitor concealing eye' is the wordplay.
'progenitor' becomes 'ma' (ma can mean mum ie a parent or progenitor).
'concealing' indicates putting letters inside.
'eye' becomes 'agent' (an agent is someone's 'eyes and ears').
'ma' enclosing 'agent' is 'MAGENTA'.
(Other definitions for magenta that I've seen before include "Colourful" , "Name tag (anag) - colour" , "Shade of purple" , "Deep purplish red" , "Purplish-pink colour" .)