A green that's suitable for the pub decor (6)
I believe the answer is:
bottle
'a green' is the definition.
(bottle green is a kind of green)
I can't explain the remainder of the clue.
Can you help me to learn more?
(Other definitions for bottle that I've seen before include "The spirit" , "Nerve - container" , "Preserve" , "Nebuchadnezzar?" , "Pitcher perhaps" .)