Well, in the coloring, I'm trying to stay as true to what refs I've got as I can. He's pretty pale and botchy... and sure, I could make him sickly, but I think sometimes too much creative license can take away from the overall look. Even subconciously, ya know?
I think the hair's what's gonna make this one pop. It's tough, cus we're so used to seeing just little bits of him in the shadows, making a clear shot of him look odd.
Oh and yeah, blue/green under layers of browns and flesh tones (like I did) is correct for the beard area. It's not really supposed to be stubble, as he had a pretty clean shave, just a shadow. There's a decipher card that has been photoshopped to look like he's stubbly, that may be what you're thinkin, but that's not what I was goin for.
Tom