To make some things clear about the graphics because I read some comments like I stole the art from Locomalito, they are coming from open game art and they are GPL, free to use as long you don't charge for them which I didn't.
Plus they are not 16 colors but 40+ and they need a hell of a lot of work to make them equally good in 16, find a correct palette change colors here and there manually etc.
http://opengameart.org/content/labbaye-des-morts