Pulsar's Title Bar Replacer Package
The Pulsar Text Editor is a great looking editor that really gets the job done. However, on a Chromebook, I don't like the native look of the title bar. I can hide the title bar with a setting in the core editor settings but I went looing for something that could really help the editor have a nice looking title bar and I found the package, the aptly named "title bar replacer" package.
To set this up you'll first hide the default title bar and then enable the package. By doing that you get a minimally themed title bar that doesn't take up too much space and you get it themed to match with Pulsar, which is very nice looking. In this video I walk you through how I did it.