I said Graphite, but I really meant "K3" - the K3 has a $60 cover has support for night reading.
http://www.amazon.com/Lighted-Leather-Chocolate-Display-Gene...
I went through three (3) night lights on my Kindle(s), and was never happy with any of them. Glare was really annoying, which is tragic if you think about how well the Kindle normally handles (sunlight) Glare.
Here's hoping the Amazon Night Light solves it. Kindle + iPad have really inspired me to start reading again.