I recently purchased a Japanese helmet. As you can see in the photo it's very rusty. I would like to restore it and make it into a naval landing forces helmet. I purchased a repro naval emblem for the front. But I'm unsure what color to paint it. Any thoughts?

Click image for larger version. 

Name:	s-l1600.jpg 
Views:	98 
Size:	61.0 KB 
ID:	7900