There are some good repaints out there.
This is what I have in my aircraft folder:
DC-5, KLM - I believe this is the original paint included with the model.
DC-5, New Holland Airways - by Wayne Tudor. My copy came from AvSim but you can probably find it elsewhere if you look around some.
R3D-1, VMJ-2, USMC - Wayne Tudor released one paint of this livery and it looks great, but there are some color and markings errors. I also painted this livery and got the colors and markings right, but my natural metal base color doesn't look nearly as good as Wayne's. My copy of his version came from AvSim, but it's probably also in other places. I believe my version was released here at SOH.
C-110, USAAF - this one was included with peperez's CFS2 conversion, so it's available in the library here.
All of these are real, authentic liveries.