Are you using FandomDesktop right now? If so, can you go to Special:ThemeDesigner and make the background purple, since our wiki primarily discusses Twitch streamers, and secondarily streamed games and streamers outside of Twitch? Thanks!
Cheers on the suggestion: during the redesign the description of the Wiki was actually moved away from specifically being about Twitch as it also includes YouTube content creators, games, and, (at the time), Mixer.
I'm not sure I have the editor rights to make the change anyhow, but I'll check with the higher-up's to see whether it can be applied on a per-user case.
Incidentally, if you want to sign a message easier, you can just use four ~ at the end of any edit.