It's not uncommon to have back windows tinted and front's clear. Many vehicles come from the factory that way.
And Balog's screen grab looks a whole lot like blood running down the window and side of the truck. I find it a little tough to think he got shot, rolled up the window, and then bled on it for a bit to better frame the cops. That's Zimmerman-esque level planning there.
Which is not to say that C&Sd's video showing his hands were at his waist isn't also correct. He could very well have dropped his hands, moved around, leaned up on a closed window, done the hokey pokey, whatever and gotten shot.
ETA: HeroHog, I see what you're saying. and that's the problem with grainy video. That arm could be through a window, or it could be leaned on a closed window. I definitely see the sleeve of his shirt. But I couldn't swear either way, from that picture, that his arm was in that truck. Which is not to say he didn't do something to justify him getting shot. Just that there seems to be two main narratives being spun right now, and the available evidence seems to show inconsistencies in BOTH of those narratives.