I was watching InfinitelyGalactic recent video on Linux mint and he highlighted this program. Works really well I’ve always found steam to be a bit unruly within my desktop especially as I run the forge gnome extension, which further exacerbates the weird behaviours. Supports most of the big colour schemes so finding something that will work for you is pretty easy.
Apperently it’s just an installer for some steam skin? I didn’t even know skins were a thing. It looks pretty amazing through.