Ok, this'll be weird but I wanted to give a followup to the snowy dull coat problem I was reporting last post.
Someone over on AmbushAlley forums suggested painting on olive oil over the snowy looking parts. I was surprised and delighted to say that it worked perfectly. I wiped off the remaining oil and the snowy surface is no longer snowy. The pic is below. I tested on this guy, and when it worked, I did the rest of the snowy squad. Thank God I didn't have to repaint them again.
And post olive oil: