https://openuserjs.org/scripts/jesus2099/mb._COLLECTION_HIGHLIGHTER
About | mb. COLLECTION HIGHLIGHTER | Userscripts | OpenUserJS
musicbrainz.org: Highlights releases, release-groups, etc. that you have in your collections (anyone’s collection can be loaded) everywhere
highlighter userscriptsmb
https://openuserjs.org/scripts/mileskitaro/Promoted_Tweet_Highlighter
About | Promoted Tweet Highlighter | Userscripts | OpenUserJS
Lets you know if a tweet is promoted and adds an easy block button
highlighter userscriptstweet
https://openuserjs.org/scripts/Phuein/Facebook_Notifications_Highlighter
About | Facebook Notifications Highlighter | Userscripts | OpenUserJS
Highlights your interesting notifications, with an option to hide the unimportant ones.
highlighter userscripts