I will try that plugin, thanks!
I am still having problems, though:
I don’t have a file called default.css in my theme editor, so I can’t make any changes to that. The default.css is my theme’s color scheme.
However, in style.css, which is what I have been making significant changes to, I have this:
#archivebox {
margin-bottom:15px;
padding:10px;
color:#000 !important;
I’m confused about why all of the changes I have been making to style.css have been overriding the default.css file (at least I assume they have, because my changes are taking effect), except for this?