Is there a protocol for customizing templates and style sheets. I am just using the default_html5 template out of the box. The first issue that I ran into is that I would like to update some styles, colors, fonts... How can I customize the stylesheets for this template without losing my work upon upgrade. I have read some about extensions, but it seems like a long way to go to edit a few lines of css.
I searched through docs and forums for the answer and am not finding it.
Thanks!