Not sure what the extension does besides editing the CSS? I can edit the CSS, that is not the problem. I just want to know what would be best practice to make changes to the default template. Installing the dev tool and make a whole copy seems almost a bit overkill. Can I put just part into an override directory? (Maybe I am thinking too much ZenCart way of working here.)
If I only work on the CSS I guess I can just keep the original copy and my modified copy offline in case of an upgrade? Or are there smarter ways of handling it?