Colour, a fruit (6)
I believe the answer is:
orange
This clue is a double definition.
'colour' is the first definition.
(I know that orange is a type of chromatic color)
'a fruit' is the second definition.
(I know that orange is a type of fruit)
(Other definitions for orange that I've seen before include "divided internally, naturally" , "Royal house - fruit - colour" , "Mandarin?" , "Between red and yellow on the spectrum" , "stocking filler" .)