Between green and orange (6)
![Ross](/clue/static/ross-mug.min.png)
I believe the answer is:
yellow
'between green and orange' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for yellow that I've seen before include "Custard-coloured" , "Lemon shade" , "(Of paper) age" , "egg is partly this" , "Colour of cowardice, custard" .)