Re: custom-styles.css and customising the supplied themes
Nice ideas. I think it should change to something similar to this.
What I had in mind was to use a PHP file with a text/css header that would dynamically include the styles for each component, as long as they were present. That way you don’t need to load any of the groups CSS if you don’t have groups installed. In the same file, the custom-styles.css file can be imported at the bottom (with a PHP check to see if the file exists – stopping the log errors).