Colour of cherry in seed, oddly (6)
I believe the answer is:
cerise
'colour' is the definition.
(cerise is a kind of colour)
'cherry in seed oddly' is the wordplay.
'oddly' indicates alternate letters (letters in the odd-numbered positions are used).
'cherry'+'in'+'seed'='cherryinseed'
The alternate letters of 'cherryinseed' are 'CERISE'.
'of' acts as a link.
(Other definitions for cerise that I've seen before include "Shade of red" , "Deep red colour" , "Cherry red colour" , "Vivid reddish-pink" , "Colour of ripe cherries" .)