Hello I just speedrun for fun with livesplit overlaying my games and I wanna know how to make the black box go away and only show the times and other text, I've seen this in every speedrunner ever's streams and videos and I did some research and you have to key out the color with OBS when streaming but is it actually possible to make it transparent for yourself without streaming?

I tried to look for answers but best I got was this random forum comment saying there is a plugin for livesplit that does it but I have not yet found it.