NoScript marks HTTP Onion as insecure
Open Tor Browser 8.0a9 or higher.
Go to some HTTP Onion like
http://yjuwkcxlgo7f7o6s.onion/(archive.tp, see onion.tp)
Click on the NoScript icon, the popup will show you
yjuwkcxlgo7f7o6s.onionin red (contrary to some HTTPS Onion like
(Not sure if there's something needed on the browser side so that's why I'm setting the component as TB though this is probably entirely a NoScript issue)