I really liked the Modular Iron-Man design and knew about it being the one used for MvC. So I got a hold of my friend onefistninja and asked what the alternate colors for Iron-Man were, he sent me back a screen shot of Silver Centurion. We both agreed that it'd make for a cool custom so I gave it a shot.
The recipe is just a Face Off Modular Iron-Man repainted with Citadel Mithril Silver, then on the appropriate areas carefully painted over with clear Tamiya red.