They are the buzzball one-piece facemasks, at least I think they are... I ordered all this stuff back in 2006, so my memory is a little hazy
They're the metal facemasks, and they all come on a small single sheet... I got two of them. There are five single-bar, five smaller QB-type, and the rest are like O-and D-lineman.
You're right about the difference between Green and the rest, with the Mod Podge... the amazing thing to me is that they don't look all that different to the naked eye, but when you take a zoomed-in picture it really jumps out at you!
Thanks for the kind words on the work by the way... I'm very pleased at how they're coming out for my first team. Great decals and paints from Raider Mike!