When I was trying to choose a syntax highlighting theme, I found that a lot of the available themes made my code look very busy. It seemed like just about every word was a different color; I found this rather distracting. So, I tried to limit this syntax theme to what are, in my view, just the essential highlighting rules. I think this makes the code easier to read and it looks nicer, too.
You can also keep the minimal highlighting rules and just replace the colors in colors.less with your own dark palette.
v0.1.3 should quiet the Deprecation Cop (for now).
Good catch. Let us know what about this package looks wrong to you, and we'll investigate right away.