The most common and most likely answer to this crossword clue is the 6 letter word ECONUT
I've seen this crossword clue in The Times
E
C
O
N
U
T
More clues leading to the result ECONUT
Buddy explains!
The straight part
We know that "An intense green?" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case an intense green? = econut.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does ECONUT mean?
ECONUT noun- One who takes a strong interest in environmental issues.