New Purple Silicone Skin for new kindle 3 Kindle Wireless Reading Device 3G Wi-Fi 6" Display, Graphite - Latest Generation + Kindle 6 Inch Srcreen Protector + Cloth
The purple silicone skin for the Kindle 3 is slim, but provides protection against scratches and things like that.  The screen protector is nice too because it does not add any glare and is still protective.