The first skin I ever created for DCS! Its a mostly black A-10 with some red accents added. The second folder included in the .zip has 4 white ace of spades added because a friend of mine wanted that version of the skin and now you can use it too!
Also note that the skin looks a lot darker in-game than it does in the ModelViewer, so in the screenshots with the blue background it looks way lighter than it actually is!
Install paths are either: \Eagle Dynamics\DCS World OpenBeta\CoreMods\aircraft\A-10\Liveries\A-10C
Or: \Eagle Dynamics\DCS World OpenBeta\CoreMods\aircraft\A-10\Liveries\A-10CII
(The skin should work with either the original A-10C or the 'Tank Killer' version)