Thanks for the query.
If its change in color due to any injury
, you may wait for an year and try ointments
If it is not getting relieved you may go for surgery.
Lip surgeries are effective but if done properly,
At the same time if complication occurs lip may get damaged
so decide with caution.
Please meet a dermatologist
for exact diagnosis.
Let me know if you have any other doubt.
you can ask a direct question to me on this forum, following the below link.
Wishing you a good health.