Might I add that Joss made Tom's eyes a brighter blue as well. If you notice on some scenes of the Avengers, whenever Thor tries to take Loki back to Asgard, you can see how his eyes are green as he fights himself. On Stark Tower, while stabbing Thor, look closely and you can also see Loki shedding a small tear.
Right brain: I am the right brain. I am creativity. A free spirit. I am passion. Yearning. Sensuality. I am the sound of roaring laughter. I am taste. The feeling of sand beneath bare feat. I am movement. Vivid colors. I am the urge to paint on an empty canvas. I am boundless imagination. Art. Poetry. I sense. I feel. I am everything I wanted to be.