Thanks for your new submissions. We're still considering which color combo we prefer, but would like to see revisions to #267, # 262, 263, and #62 to make the branching pattern in the airways in the lungs more anatomically correct. Please refer to the following two links for visual representation of the correct anatomy (one main airway with branches off of it, vs. two airways on each side as you have shown):
http://upload.wikimedia.org/wikipedia/commons/thumb/9/9e/Lungs_diagram_simple.svg/220px-Lungs_diagram_simple.svg.pngwww.howourlungswork.com/airways.html
Thank-you!