Hi,
All current treatment for acne scars will also work for dark ethnic skin although risk of PIH is higher if you opt for more aggressive/effective modalities which can give you greater clinical improvement.
Fractional CO2 laser can be considered as a good first line treatment option. Effectiveness may be enhanced with more aggressive treatment parameters albeit at the expense of higher risk and degree of PIH.
Alternatives to consider are fractional microneedle RF and fractional picosecond laser which are associated with lower risks of PIH.
Complementary treatments include subcision and TCA cross.
It is best you discuss with your preferred Aesthetic doctor your expectations and ability to accept downtime for him/her to help devise an individualized treatment plan for you.
Hope this helps!