The Fusion UI Theme is a fork of the accents-ui theme that has been given a facelift. It is designed to go best with @Murriouz's Dark Bint Syntax Theme and with @brendanblackwood's Material Monokai Syntax Theme.
Merely open up a terminal and run:
$ apm install fusion-ui
Good catch. Let us know what about this package looks wrong to you, and we'll
investigate right away.