Custom style sheets

When managing a distribution it's usually best not to make any changes to anything within the profiles directory. Treat this component as if it's part of Drupal core because it will undoubtably be overritten whenever a new version of Julio comes out and you upgrade (unless you are very careful).

If you want to add your own CSS I'd suggest either writing a module that just adds in your stylesheet or using a module like http://drupal.org/project/css_injector which will allow you to apply your styles whenever you want.