What to use the Deposit for?

[Sada Rafi]

I have tenants leaving in a couple of days. They cleaned up the place really good and I see no damages except for a few nail holes on walls which they filled and patched, but needs paint now. 

I have the paint but not sure if I will end up painting the whole room to avoid color miss match or just over the patches. If I painted the rooms do I need to take it out of their deposit? or is painting considered a wear and tear? House is in NC.  

thanks a bunch!