Twitch Chat User Highlight
Highlights messages by user, on username or @username click
Works with and without FFZ/BTTV.
So basically you can highlight all current and future messages by any given user by clicking on their username or on @theirusername on someone else's message.
To un-highlight, click their username again.
User highlight also stops automatically after x seconds (5 by default), starting from when the mouse leaves the chat area. The timer is reset and stopped when the mouse enters it again. i.e. Auto-stop-highlight happens after the mouse has been outside the chat area for x seconds.
Auto-stop-highlight-timer value can be changed from the Tampermonkey menu (click the TM icon in the toolbar)
The main motivation for making this was all those times I see someone @user replying to someone and having to look around for the original person's message to know what they are talking about. This script makes that easy.
This does of course replace the default behaviour of clicking on users to open their user page, but you can still do that as normal with middle-mouse.
Compatible with BTTV & FFZ
Tested on latest versions of Chrome & Firefox