Reaction to Goold's Macbeth

Overall, I enjoyed the movie (other than it being a tad long for my taste.) True to Shakespeare's original script, Goold's Macbeth starts right smack in the middle of everything. For the most part I thought that the movie stayed very true to the original text. The language was almost word for word from the text, the characters were very similar to those described by Shakespeare, and most scenes were left in the film instead of being cut. I really enjoyed the modernized style that Goold decided to take with his film. It reminded me of the recent BBC television adaptation of Sherlock Holmes, Sherlock in how several things remained the same when it came to content. One thing that really stood out to me while watching Goold's adaptation of Macbeth was the lighting. Before this class I probably wouldn't have given a second thought about lighting, but after doing some analyzing in class I made sure to pay attention. The first use of lighting that really stood out to me was the scene where we are first introduced to Lady Macbeth. In this scene the lighting was a very eerie green color. The light was also positioned so to make Lady Macbeth's skin look somewhat uneven and rough. Because of the lighting it made Lady Macbeth look almost serpent like. Another great use of lighting came later in the movie when Macbeth and Lady Macbeth were talking privately in their room before the dinner party. In this scene the lighting was a very deep red that engulfed the entire room. It felt suffocating (which is how I imagine Lady Macbeth was starting to feel at this point.)

My questions are:
1.) I noticed that several of the scenes were very wide and open spaces. The dining room, the kitchen, the scene where Macbeth and Banquo encounter the Witches, etc. and I guess my question is why are so many of these scenes so open and airy? Is that just the director's artistic style or is there something else going on here?
2.) Several important scenes/speeches took place in the kitchen. Is there a reason for this or was this random?