Don't cover aqua tint; it's charming (6)
I believe the answer is:
quaint
'it's charming' is the definition.
(I've seen this in another clue)
I can't explain the rest of the clue.
Can you help me to learn more?
(Other definitions for quaint that I've seen before include "Curious" , "Picturesque" , "Charmingly odd, old" , "Funny and old-fashioned" , "Charming" .)