The most common and most likely answer to this crossword clue is the 6 letter word RESEDA
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More clues leading to the result RESEDA
Buddy explains!

The straight part
We know that "Pale green" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case pale green = reseda.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 RESEDA mean?
RESEDA noun- Any of various plants of the genus Reseda having small, pale grayish green flowers, such as dyer's rocket (Reseda luteola) and mignonette (Reseda odorata).
- (specifically) Mignonette (Reseda odorata).
- A pale greyish-green colour like the flowers of a reseda plant; mignonette.
- Having a pale greyish-green colour like the flowers of a reseda plant; mignonette.