Shade of gold in plant that’s generally green or off-white (5)
I believe the answer is:
ivory
'shade' is the definition.
(I have seen 'Shade of white' mean 'ivory' so perhaps 'shade' could also mean 'ivory')
'gold in plant that's generally green or off-white' is the wordplay.
I cannot really understand how this works, but
'gold' could be 'or' ('or' is the heraldic name for gold) and 'or' is present in the answer.
'plant' could be 'ivy' (ivy is a plant) and 'ivy' is found within the remaining letters.
This accounts for all the letters.
This may be the basis of the clue (or it may be nonsense).
'of' is the link.
Can you help me to learn more?
(Other definitions for ivory that I've seen before include "National emblem" , "Piano-key" , "Piano key" , "Substance in elephant tusks" , "Material from tusks of certain mammals" .)