This wouldn’t show up in the RSS feed, but if you have looked at the site in the past 10 hours or so, you would have noticed that there is now a fractal background in each post page.
It is based on one of my fractal wallpapers. This is something I have been contemplating doing for a while, to add a bit more to the page. It is a little large, approximately 440k, since the entire image is a semi-transparent png. I’m thinking about changing it to a jpg and giving it a fixed background colour so that it’s not so big, though I do prefer the semi-transparent png, but you get that.