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 see how this works, but
'gold' could be 'or' ('or' is the heraldic name for gold) and 'or' is found in the answer.
'plant' could be 'ivy' (ivy is a plant) and 'ivy' is located in the leftover letters.
No letters remain.
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" .)