I find the white color of the Nook frame distracting for long term reading, and want to frame it in a black skin. (Kindle had the right idea here). Skins can be either thin decals that stick on, or you can get a silicone (rubbery) case that is molded plastic that fits all around the Nook. My question for those in the know is if I buy the silicone skin will that bulk up the Nook too much to fit in a case? These skins are pretty cheap, but I need to have a case to protect the Nook from my clumsiness. The decals are much thinner, and would certainly fit in a case, but alas, they are more expensive. Any experiences out there someone can share with me? Thanks.