Light weight plugin to help developers know they are on their staging site. If your domain appears to be a staging or dev domain the admin colours change to a bright colour and you get a nag notice to remind you. The colours are also shown on the customizer and the adminbar on front end view. TLDs that are considered as dev or staging: *.dev *.test *.local *.staging *.example *.invalid *.myftpupload.com (GoDaddy) *.cloudwaysapps.com (Cloudways) *.ngrok.io (tunneling) Subdomains that are considered as dev or staging: local.* dev.* test.* staging.* stagingN.* (SiteGround; N is an unsigned int) *.staging.wpengine.com (WP Engine) dev-*.pantheonsite.io (Pantheon) test-*.pantheonsite.io (Pantheon) Additionally, if your domain is localhost (with any port), it will also be treated as a dev or staging domain.