I have just made the first version of my first serendipity theme/template. I call it (creatively enough) “brown paper”.
The entire purpose of making a new template was to make this website my own bit of work. I am never fully comfortable with using somebody elses work. I find myself itching to customise it and make it my own.
I wanted to make my website look like a stained piece of yellowish paper. The paper had to be yellow because I think that makes it easier to read text. The stains would give it a well-used feel. I have successfully tested it in Firefox 1.5, Seamonkey 1.0, IE 6.0 and Opera 8.5. It displays too wide in IE 5.5 causing the horizontal scroll bars to appear.
EDIT: I have completed this template. I fixed a few bugs relating to comments display and admin new entry preview. A few other minor changes were also made. Its available for download here and via spartacus.This theme is a modification of the default s9y template. See the included credits file for details.