Regarding Venom's blue, I do wish it were a little brighter like the MvC sprites. It's the right hue of cerulean blue from what I can tell, but the wrong value. I don't have him yet so this is all based on images and reviews.
On that note of comparing these figures to the MvC sprites, War Machine is an interesting one. They really half-assed the legs, didn't they? So the new upper body sculpt looks like MvC art, which looked nothing like the sprite, which was an Iron Man palette swap. That part is fine. But the legs look nothing like the game art or sprites. Just a really lazy decision from Hasbro. I wonder if anyone has swapped the legs/lower body from the Fan Channel War Machine...