Someone asked me awhile ago why I picked this color scheme? When I saw this template design among those available to us at blogger I liked that it reminded me of the sepia diazo prints I used to make in the past (back when dinosaurs roamed the earth and we used technical pencils/pens to draw).
We used to have to provide a set of sepia prints with our equipment and design submittals when I worked for a theater rigging contractor years ago. These sepia diazo prints permitted altering the document without changing the the original vellum.
I've always liked the way sepia drawings looked when compared with "blueprints". I've seen a few blog templates lately though that have caused me to think about a change...but then I get sepia and go to bed.