Ever since I posted this review, I've constantly been getting questions on how I got my MacBook Air's keyboard keys turned into blue. Those who asked had no idea I simply used a silicone keyboard cover. I've been using silicone covers for years now on every single keyboard I use, whether it's the Apple Wireless Keyboard, or my MacBooks. Why would you ever want to use a silicone keyboard cover you ask? There are two main reasons why you should. Appearance and protection are the two main reasons why you should get yourself one of these covers. There are many types and brands of keyboard covers, but I decided to create this guide based upon the cheapest, and most common keyboard covers there are. Full guide right after the break!