Meltonian and Creme Saphir make polishes in the same colors as Hermes bags.
Here is what I would do, (but each to his own with working on your own bags.)
I would buy the gold color and dab a tiny bit on the scuff with a Q Tip.
It won't cover it completely, but it helps.
I am not a big believer in spa treatment, unless bag really needs major help.