Anyone?

It is about 3am and I have been up for a while with a HORRIBLE toothache. Not a good start to my day. Anyway, since I lack the motivation to do anything productive in the dark I was trying to change the blog background. Anyone know how to make the "center column" a different color? The blog template I picked shows it green but every time I change the background to another HTML code it is keeping the color this tan/peach color...yuck. Anyone else familiar enough with Blogger to help?