He's a straight up repaint of the Iron Patriot.
Hasbro decided to make the Iron Patriot instead of the War Machine Armor that everyone wants. In the movie they show a few seconds of the armor before they repainted it in the patriotic theme. The armor looks very cool in Black, Silver, Gunmetal, and chrome.
He was primed using Citadel primer, and was hand painted using Citadel, Model Masters, Formula P3 paints.
His eyes, ARC reactor, repulsors and barrel area of the shoulder cannon were all given a clear red effect so that they seem electronic. With the silver paint under it, the red seems to glow with any light source that hit its.
I dirtied him up for battle damage with dry brushing and washes.
Not much else to it but I like it better than the Iron Patriot version.