I just got a new white macbook. I love everything about it except that it gets dirty so easy, especially the part around the touching panel where I my palm moves around a lot when I type and do stuff. And it's annoying because it's hard to clean it. So my question is: is there such an accessory that'd protect those parts from getting dirty? I had an ibook before and had the same problem. or should i just wash my hands everytime before i use my macbook?