Update main fcfcfc background to f7f7f7 and apply to body and #main. Update f1f1f1 stuff to be eee

I find f7f7f7 to be a very readable background color that takes the edge off white backgrounds so I set it instead of fcfcfc. I also added #main and a body selector into the background color definition to ensure the CSS sidebar etc. all have the f7f7f7 background.

This patch also updates #f1f1f1 stuff to be #eee to maintain adequate contrast with the new #f7f7f7 background.