So, I'm still too lazy to customize the look of the blog (after all, I do web programming, not design).
However I think these colours are more readable. I still want to make the width of the blog entries themselves wider and dynamic but I'll have to have a proper look later; a quick search through the template's html for the word "width" and editing those values doesn't quite do what I want it to.
If you don't like it, feel free to leave a comment to that effect. I'm just playing around with it.