Asteroid-Man said:
That was very impressive! The only thing that bothered me was how brown Yoda looked...

He's indoors in soft yellow light in a brown room. Colors can be deceptive. A white wall in sunlight looks yellow, a dark blue shirt indoors or at night can look black. Yoda looks fine in that scene because it's natural for the hue of his skin to take on some of the brown of the interior space. If he was bright green in every setting (which is how he looks in the PT, no matter the lighting or tone of the scene) it would look unnatural.