Hey guys, I think its cool to experiment with saturation levels, it seems just another tool in the tool box, right? Also, I'd like to mention HDRI imaging, the theory behind the file type is actually quite interesting regarding the range of natural colors versus photos, paintings, etc. Here's a link in case you're not familiar,
http://en.wikipedia.org/wiki/HDRI , forget the technical stuff, unless you're into that, check out the photo examples, I just think its something to think about, atleast, when rendering by hand or when doing pixel art....