How do I make the menubar a different color on my dev/staging sites
As of CiviCRM v5.12.1 the menubar color is a configurable setting.

On your main site you can change the color via the UI by visiting Administer -> Customize Data &amp; Screens -> Display Preferences.



Since this preference is stored in a system setting, you can override it on your various dev/staging sites by adding a line like this to civicrm.settings.php:

$civicrm_setting['CiviCRM Preferences']['menubar_color'] = '#800000';