Allow civicrm.css to be overridden/customized in the same manner template files can be customized

Hi CiviCRM team,

Thanks for reading.

Do you have a way to override/customize the CSS for Civicrm (civicrm.css) in a way similar to templates? That is a pretty slick way you have made to set up custom templates.

My goal: To customize the look and feel of several pages within CiviCRM, changing colors, borders, of search results, etc and to not have to edit civicrm.css itself, because this may make future upgrades of the software more complicated.

It would be pretty cool to not have to hack a template file, or change the civicrm.css itself, but rather just put the custom civicrm.css file in its place. Hope this makes sense.