Sorry tried searching but did not get the result I was searching for.
But is there anyway to set the background color on my channel on twitch so the changes is also visible to my viewers? founs betterttv but that change is only for me?
Is it possible and how do I do it?
No, there isn’t a way to do this. This forum is for third party developer support, so I’d suggest https://twitch.uservoice.com to suggest this idea. 