If you look at the stock reference pictures for the marine, you'll notice that the legs are a slightly darker shade of gray than the knee pads or boots (which are almost white.)
The skin that you've created has the legs and knee pads/boots the same color, with only minor detailing to the boots and knee pads. I think it would look a little sharper if you were to darken up the legs (leave the knee pads and boots the way you have them!), and the codpiece should be the same colour as the legs..
Your skin
Reference Pictures
You have some really great detail in your skins, I just think that this would make them look a little sharper, and for a movie mod, this would help with the extra contrast especially when moving. Just an idea.




