A green that's suitable for the pub decor (6)

I believe the answer is:

bottle

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'a green' is the definition.
(bottle green is a kind of green)

I cannot understand how the remainder of the clue works.

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" .)

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