Better Behavior is an Atom syntax theme originally based on fnky's Behave syntax for TextMate. This version adds additional highlighting to a number of familiar languages, yielding a more colorful and friendly developer experience. But don't take my word for it...
(Pictured with Atom Material UI and Maison Neue Mono.)
Work is ongoing to add additional customizations for additional languages; if you should happen to beat me to one, pull 'er, patch 'er, and PR 'er.
Good catch. Let us know what about this package looks wrong to you, and we'll investigate right away.