Board Thread:Support Requests - Community Management/@comment-11372432-20180902002350/@comment-9605025-20180902203626

Could you clarify what you mean by highlight? Are you talking about the actual feature that makes a thread appear in all users' notification menus or are you simply talking about changing the color/text/styling of the message?

As TheGoldenPatrik1 said, you can ask staff. However, you need to have a really good reason for it or they will just say no. As for renaming, I am 99% certain they aren't going to do that due to the way MediaWiki works. However, you can change the name that appears in the user masthead. Just edit any of [ these system messages] on your wiki.