Colour specialist: ultimately every colour of the rainbow is seen round about (4)
I believe the answer is:
dyer
'colour specialist' is the definition.
The definition and answer can be both people as well as being singular nouns.
Maybe they are linked in a way I don't understand?
'ultimately every colour of the rainbow is seen round about' is the wordplay.
'ultimately' suggests the final letters.
'colour of the rainbow' becomes 'red' (I can't explain this - if you can you should give a lot more credence to this answer).
'is seen round' indicates putting letters inside.
'about' shows that the letters should be reversed in order.
The final letter of 'every' is 'y'.
'y' put into 'red' is 'reyd'.
'reyd' written backwards gives 'DYER'.
Can you help me to learn more?
(Other definitions for dyer that I've seen before include "Colour-changer" , "Colourer of fabrics" , "One colouring e.g. fabric" , "Cloth colourer" , "One changing colour" .)