One of my personal favorite paint schemes of the DW12, Panther Racing's 2013 Chevrolet United States National Guard livery.
All .dds files go into:
or whichever IndyCar you want to paint, create a directory first if you haven't already in the Tuning menu in-game. I'm sure you guys have it down.
2013 Panther Racing Dallara DW12 Livery 1.0
J.R. Hildebrand Dallara DW12 2013 IZOD IndyCar series National Guard #4 Chevrolet